sppa 2050 speeech anatomy & physiology tasko 1 the phonatory system
TRANSCRIPT
![Page 1: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/1.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
1
The Phonatory System
![Page 2: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/2.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
2
Outline ANATOMY OF THE PHONATORY SYSTEM
Bones, Cartilages & Joints Ligaments and membranes Innervation of the larynx Muscles of the Larynx Laryngoscopic, coronal and dorsal views of larynx and associated
structures Vocal Fold Structure
PHYSIOLOGY OF PHONATORY SYSTEM Laryngeal function Description of vocal fold vibration Necessary & sufficient conditions for phonation
![Page 3: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/3.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
3
The Larynx: Key Functions Airway Protection Intrathoracic pressure generation Valving for speech
![Page 4: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/4.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
4
trachea
thyroid gland
larynx
The larynx: in situ
![Page 5: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/5.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
5
![Page 6: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/6.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
6
Midsagittal section
Figure 37.3
![Page 7: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/7.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
7
Spin 180º
![Page 8: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/8.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
8
Superior view
ventral
dorsalVocal folds
glottis
![Page 9: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/9.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
9
Bones, Cartilages & Joints
![Page 10: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/10.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
10
Skeletal Structure
Hyoid Bone Thyroid Cartilage Cricoid Cartilage Epiglottis Arytenoid Cartilage
Figure 37.21
![Page 11: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/11.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
11
Hyoid Bone, Thyroid Cartilage & Epiglottis
Figure 37.21 Figure 37.17
![Page 12: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/12.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
12
Cricoid Cartilage
Figure 37.19
![Page 13: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/13.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
13
Arytenoid Cartilages (paired)
Figure 37.20
![Page 14: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/14.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
14
Laryngeal JointsMovement Basics 6 degrees of freedom possible Translation – 3 degrees Rotation – 3 degrees
Pitch Roll Yaw
![Page 15: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/15.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
15
Figure 37.21
Laryngeal Joints
![Page 16: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/16.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
16
Joint Articulation Thyroepiglottic joint
pitch Cricothyroid joint
Pitch Translation
Cricoarytenoid joint Pitch and roll – rocking Translation – sliding or
gliding
![Page 17: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/17.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
17
Ligaments & Membranes: Epiglottis
Hyoepiglottic l. Thyroepiglottic l. Glossoepiglottic folds
(median and lateral) Aryepiglottic fold
![Page 18: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/18.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
18
Ligaments & Membranes: Epiglottis
Hyoepiglottic l. Thyroepiglottic l. Glossoepiglottic folds
(median and lateral) Aryepiglottic fold
![Page 19: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/19.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
19
Ligaments & Membranes: Thyroid & Cricoid cartilages
Thyrohyoid m. Ceratocricoid l. Conus elasticus Vocal l. Cricotracheal m. Posterior Cricoarytenoid l.
Figure 37.21
![Page 20: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/20.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
20
Conus Elasticus & Vocal Ligament
Figure 37.21
![Page 21: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/21.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
21
![Page 22: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/22.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
22
Laryngeal Anatomy: “Surface Geography” – Superior view
Dorsal/Posterior
Ventral/Anterior
True vocal fold
False (ventricular) fold
esophagusarytenoid
aryepiglottic fold
epiglottis
glottis Pyriform sinus
![Page 23: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/23.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
23
Anterior View of Larynx
Figure 37.31
![Page 24: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/24.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
24
Interior view of larynx
Figure 37.23
![Page 25: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/25.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
25
Coronal View
Rostral (superior)
Caudal (inferior)
Ventricular(false) folds
ventricle
True vocal foldsglottis
Subglottal area
Supraglottal cavity(aditus)
![Page 26: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/26.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
26
Coronal section
Figure 37.23
![Page 27: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/27.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
27
Laryngeal Anatomy Posterior view
Pyriform Recess (fossa)
Laryngeal Vestibule (aditus)
Figure 36.28
![Page 28: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/28.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
28
Nerve supply to larynx Cranial Nerve X (Vagus N.)
provide motor supply to all intrinsic muscles major nerve communicating sensory information
to the CNS 2 branches important for larynx
Superior laryngeal nerve Internal branch – provides sensory supply External branch – supplies cricothyroid m.
Recurrent laryngeal nerve Motor to all other intrinsic muscles
![Page 29: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/29.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
29
Nerve supply to Larynx
Figure 36.33Figure 37.26
![Page 30: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/30.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
30
Nerve supply to Larynx
Figure 37.28
![Page 31: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/31.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
31
Laryngeal Anatomy: The muscles1. Intrinsic muscles Both origin and insertion are within the larynx
2. Extrinsic muscles An origin or insertion is within the larynx
3. Supplemental muscles No origin/insertion within the larynx, but affects the location
of larynx in the neck
![Page 32: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/32.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
32
Key ActionsPosition Adduct AbductTension Tense SlackenLength Lengthen Shorten
Intrinsic Laryngeal muscles
ADDUCTION
ABDUCTION
![Page 33: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/33.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
33
Lateral cricoarytenoid (LCA)
Origin:
Superior edge of
lateral border of cricoid
cartilage
Insertion:
muscular process of
arytenoid
Action: adducts VF
Motor Supply: CN X
(recurrent laryngeal nerve)
Figure 37.22
![Page 34: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/34.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
34
Lateral cricoarytenoid (LCA) Action
From Netter
![Page 35: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/35.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
35
Posterior cricoarytenoid (PCA)
Origin: Posterior (dorsal) surface of cricoid cartilage
Insertion:
muscular process of
arytenoid
Action: abducts VF
Motor Supply: CN X
(recurrent laryngeal nerve)
Figure 37.22
![Page 36: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/36.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
36
Posterior cricoarytenoid (PCA)
Figure 37.22
![Page 37: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/37.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
37
Posterior cricoarytenoid (PCA) Action
From Netter
![Page 38: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/38.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
38
Thyroarytenoid (TA)Often considered to have 2 parts Vocalis Thyromuscularis
Origin: Internal surface of the thyroidangle Insertion: Vocal and muscular process ofarytenoid Action: shorten & adducts VF Motor Supply: CN X(recurrent laryngeal nerve)
From Netter
![Page 39: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/39.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
39
Thyroarytenoid (TA)
Figure 37.22
![Page 40: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/40.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
40
Thyroarytenoid (TA) Action
From Netter
![Page 41: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/41.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
41
(Inter)arytenoid (IA)Often considered to have 2 fiber types Oblique Transverse
Origin: Posterior (dorsal) surface of arytenoid surface
Insertion:
Posterior (dorsal) surface of
opposite arytenoid
Action: adducts VF
Motor Supply: CN X
(recurrent laryngeal nerve)
Figure 37.22
![Page 42: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/42.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
42
Interarytenoid (IA) Action
From Netter
![Page 43: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/43.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
43
Cricothyroid (CT)
Often considered to have 2 fiber types Oblique VerticalOrigin: ventral and lateral surfaces of arch of cricoid cartilage Insertion: Caudal border of the thyroidcartilage and anterior surface ofinferior horn Action: lengthens and tenses VF Motor Supply: CN X(external branch of superior laryngeal
nerve)
Figure 37.22
![Page 44: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/44.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
44
Cricothyroid (CT) Action
From Netter
![Page 45: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/45.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
45
Summary of Key actions
Box 37.20
![Page 46: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/46.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
46
Extrinsic laryngeal muscles refers to muscles with a single attachment to a
laryngeal cartilage
![Page 47: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/47.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
47
Extrinsic muscles: Sternothyroid
Origin:superior and posteriorportion of the sternum andfirst costal cartilageInsertion: oblique line of thyroidAction: depresses thyroidcartilageMotor Supply: C1-C3Ansa cervicalis
![Page 48: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/48.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
48
Extrinsic muscles: Thyrohyoid
Origin:
oblique line of thyroid
Insertion:
hyoid bone
Action: depresses hyoid or
elevates thyroid cartilage
Motor Supply: C1
![Page 49: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/49.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
49
Ansa Cervicalis
![Page 50: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/50.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
50
Ansa Cervicalis
![Page 51: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/51.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
51
Supplemental laryngeal muscles no direct attachments to laryngeal cartilages attach on/near the hyoid bone “Suspends” larynx in the neck may elevate or depress hyo-laryngeal complex Suprahyoid muscles: muscles that attach to sites
rostral to the hyoid bone Infrahyoid (aka ‘strap’) muscles: muscles that
attach to sites caudal to the hyoid bone
![Page 52: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/52.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
52
Supra and infra hyoid muscles
Figure 37.7
![Page 53: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/53.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
53
Geniohyoid
Figure 37.15 Figure 37.8
![Page 54: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/54.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
54
Mylohyoid
Figure 37.8
![Page 55: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/55.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
55
Digastric and Stylohyoid
Figure 37.8 Figure 37.7
![Page 56: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/56.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
56
Hyoglossus
Figure 36.23
![Page 57: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/57.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
57
Sternohyoid & Omohyoid
Figure 37.8Figure 37.15
![Page 58: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/58.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
58
Sternohyoid & Omohyoid
Figure 37.7
![Page 59: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/59.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
59
Flex.mpg
![Page 60: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/60.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
60
Vocal Fold paralysis video
![Page 61: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/61.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
61
Superior view
![Page 62: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/62.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
62
“Layered” structure of vocal fold
![Page 63: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/63.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
63
Basic Structure of the vocal fold
epithelium
connective tissue
superficial layer
tissue loosely connected to the other layers
intermediate layer
elastic fibers (stretchy)
deep layer
collagen fibers (not stretchy)
muscle (TA)
Vocal ligament
Laminapropria
![Page 64: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/64.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
64
Vocal Fold Lesions
![Page 65: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/65.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
65
Laryngeal Physiology
![Page 66: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/66.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
66
What is the function of the larynx?
Protection Pressure generation Valving for speech
![Page 67: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/67.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
67
Laryngeal function during SwallowingWithin the SLP scope of practice
Role of larynx in swallowing protect the airway from
food/liquids. Levels of protection
True vocal folds Ventricular folds (false folds) Adduction and anterior motion
of arytenoids “Retroflexion” of the epiglottis
![Page 68: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/68.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
68
Anterior (ventral)
Posterior (dorsal)
![Page 69: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/69.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
69
Videofluoroscopy tape
Figure 37.3
![Page 70: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/70.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
70
What is the function of the larynx?
Protection Pressure generation Valving for speech
![Page 71: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/71.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
71
What did we see?
Alternate opening and closing of the glottis There are some distinct phases
Opening phase (glottis is getting bigger) Closing phase (glottis is getting smaller) Closed phase (glottal opening is absent)
Different parts of the glottis opens and closes at different times
“wave like” action along length of vocal folds If we could see it, the bottom of the fold opens first and closes
first (vertical phase difference)
![Page 72: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/72.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
72
![Page 73: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/73.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
73
What did we see?
Different parts of the glottis opens and closes at different times
“wave like” action along length of vocal folds If we could see it, the bottom of the fold
opens first and closes first (vertical phase difference)
![Page 74: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/74.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
74
![Page 75: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/75.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
75
Why does phonation occur?
Aerodynamic-myoelastic theory of phonation Glottal vibration is the result of an interaction between aerodynamic
forces and vocal fold muscular forces Three things are necessary and sufficient for phonation to occur
1. Adduction (often termed medial compression)
2. Longitudinal tension (the vocal fold must have an appropriate amount of tension along its length)
3. Aerodynamic forces (pushing and pulling by air flow and pressure)
![Page 76: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/76.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
76
![Page 77: SPPA 2050 Speeech Anatomy & Physiology Tasko 1 The Phonatory System](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d305503460f94a0889e/html5/thumbnails/77.jpg)
SPPA 2050 Speeech Anatomy & Physiology Tasko
77
Do we need a larynx to phonate? Insufflation test