chapter 10 muscular system. 2 muscles of the face & head (aponeurosis/fascia: flat, sheet-like...
TRANSCRIPT
CHAPTER 10
MUSCULAR SYSTEM
2 Muscles of the face & head (Aponeurosis/Fascia: Flat, sheet-like tendon)Figure 10.6 page: 331A. Epicranius- frontalis & occipitalis 1. Word derivation a. Epi: (G) on top of b. Cranius: (L) skull 2. Origin: Occipital bone 3. Insertion: skin/muscles around eye 4. Action: Raise eyebrowsB. Orbicularis Oculi
1. Derivation: (L) circular/round & eye2. O: Maxilary & frontal bones3. I: Skin around eye4. A: Closes eye (Sphincter muscle)
3 Figure 10.6 page: 331
4 C. Orbicularis Oris1. Oris (L) mouth2. O: Muscles near mouth3. I: skin of lips4. A: Closes and “pucker ups” lips (Sphincter)
D. Temporalis – video1. (L): side of head - temple region
temporalis bone2. O:Temporal bone 3. I: Lateral surface of mandible4. A: Closes jaw #51
E. Zygomaticus1. (G) Bar2. O: Zygomatic bone3. I: Obicularis oculi4. A: Raises corner of mouth (smile)
5 Figure 10.6 page: 331
Temporalis Video # 51
6 F. Buccinator – video #51. (L) Trumpeter2. O: Outer surface of maxilla & mandible3. I: Obicularis oris4. A: Compresses cheeks inwards
G. Masseter – video #311. (G) Chew2. O: Lower border of Zygomatic arch3. I: Lateral surface of mandible4. A: Closes jaw/chew
7. Figure: 107a: pg. 333
Buccinator video #5
Masseter muscle video #31
8 H. Sternocliedomastoid(eus)- SCM 1. origins & insertions 2. O: Sternum & clavicle(cliedeo, G-hook) 3. I: mastoid process of temporal bone 4. A: singly- rotate head, together- flex neck
I. Splenius capitis #47 1. 2. O: Spinous & transverse processes of lower cervical & upper thoracic vertebrae 3. I: Mastoid process 4. A: Rotate head, laterally flex neck
9 Fig. 10.9 a; pg. 337 SCM
10 Fig. 10.9b : page 337 splenius capitis
Spleenius capitus Video #47
.11 I. Semispinalis Capitis #42 1. semi = half (origin ½ & ½) 2. O: Spinous & transverse processes of lower cervical & upper thoracic vertebrae 3. I: Occipital bone 4. A: Extend, laterally flex & rotate neck
12 Figure: 10.9 d page:339 Semispinalis capitis
Semispinalis capitis video #42
13 Muscles of the pectoral girdlePosterior Fig. 10.13 c; page 348A. Trapezius #58
1. Shape: trapezoid 2. O: Occipital bone, spinous process of cervical &
thoracic spine 3. I: Clavicle; spine & acromion process of scapula
4. A: Raises & rotates scapula
B. Rhomboid Major #38 1. Shape rhomboid 2. O: Spinous processes of upper thoracics 3. I: Medial boarder of scapula 4. A: Raises & Adducts scapula
14 Fig. 10.13 c; page 348 trapezius & rhomboid
Trapezius video #58
Rhomboid major video #38
15 C. Levator Scapulae #29 1. Lifts scapula 2. O: Transverse processes of C-spine 3. I: Margin(superior/medial) of scapula 4. A:raises & adducts scapula
Pectoral girdle, anterior. Fig. 10.13 a pg. 347
D. Serratus anterior #44 1. (L) saw toothed 2. O: Outer surface of upper ribs 3. I: Ventral surface of scapula 4. A: Pulls scapula anterior & down (inferior)
16 Fig. 10.13 c; page 348 levator scapulae
Levator scapulae – video #29
17 Figure: 10.13a; page: 347 serratus anterior
Serratus anterior – video #44
18 E. Pectoralis minor #34 Fig. 10.13 a; pg.347 1. (L) Chest 2. O: Sternal ends of upper ribs 3. I: Coracoid process (scapula) 4. A: Pulls scapula anterior & down
Rotator cuff muscles(SITS) Fig. 10.14 b; page. 351
A. Supraspinatus* #50 1. Superior to scapula spine 2. O: Superior posterior aspect of scapula 3. I: Greater tubercle of humerous 4. A: Initiates arm abduction first 15 degrees
19 Fig. 10.13 a; pg.347 pectoralis minor
Pectoralis minor – video #34
20 Fig. 10.14b; page. 351 supraspinatis
Supraspinatus video # 50
21 B. Infraspinatus #251. Inferior to scapular spine2. O: Inferior posterior scapula3. I: Greater tubercle of humerous4. A: External rotation of arm
C.Teres minor #531. (l) Long and round2. O: Lateral boarder of scapula3. Greater tubercle of humerous4. A: Rotate arm externally
22 Fig. 10.14b; page. 351 infraspinatus & teres minor
Infraspinatus – video # 25
Teres minor – video #53
23 D. Subscapularis* #48 Fig. 10.14 d; pg. 3521. Underneath (anterior) side of scapular spine2. O: Anterior surface of scapula3. I: Lesser tubercle of humerous4. A: Prime mover - Rotates arm internally
24 Subscapularis* Fig. 10.14 d; pg. 352
Subscapularis video #48
25 Muscles of the glenohumeral joint shoulder/upper arm
Anterior muscles Figure 10.13 a; pg. 347
A. Pectoralis Major #33 1. (l) Chest 2. O: Clavicle, sternum & cartilagof upper ribs 3. I: Intertubercular grove of humerous 4. A: prime mover for upperar adduction
26 Figure 10.13 a; pg. 347 pectoralis major
Pectoralis major video33
27B. Deltoid - #6
figures 10.13 a&c pgs. 347 & 348
Delta 1. (l) triangle shape
2. O: Scapula, acromion process, spine, clavicle
3. I: Deltoid tuberosity of humerous 4. A: Prime mover for arm adduction (middle
fibers), also flexes & extends arm
28 figures 10.13 a pgs. 347 deltoid anterior
Deltoid muscle #6
29 figures 10.13c pgs 348 deltoid, posteror
30 PosteriorC. Latisimus dorsi (lats) #28 1. lats/wings 2. O: Spinous processes of sacral, lumbar & lower thoracic spine 3. I: Intertubercular grove 4. A: Prime mover for upper arm adduction Fig. 10.14b; pg. 251
Muscles that move the elbowFig. 10.14 a&b pages: 351 & 352Anterior chamber
31 Fig. 10.14b; pg. 251 latisssimus dorsi
Latisimus dorsi video-28
32 A. Brachialis #3 1. (l) arm 2. Origin: anterior distal humerous 3. Insertion: coronoid process of ulna 4. Prime mover for forearm (elbow) flexion
B. Biceps brachii #1 1. (l) arm & muscle has 2 heads 2. Origin: short head: coricoid process long head: glenoid tubercle & glenoidcavity 3. Insertion: Radial tuberosity 4. Not the prime mover- synergist for flexion; supination of wrist
33 Figure: 10.14 d; page 352 brachialis
Brachialis video #3
34 Figure: 10.14 c; page 352 Bicep brachii
Biceps brachii video #1
35 Posterior Chamber
A. Triceps brachii #59 fig. 10.13 b 1. (l) three heads
2. Origin: posterior head of humerous3. Insertion: Olecranon of ulna 4. Prime mover for lower arm (elbow)
extension
36 Triceps brachii fig. 10.13 b page 351
Triceps brachii video #59
37 Muscles that move the thigh Originate somewhere on the pelvis and insert
somewhere on the femur Anterior group: Fig. 10.19 a-c; pg. 264 Function – flex the thigh A. Iliopsoas – prime mover #24 Psoas major 1. O: Anterior lumbar vertebrae disc, bodies
& transverse processes 2. I: Lesser trochanter B. Iliacus
1. O: ilium - anterior fossa 2. I: Lesser trochanter
38 Fig. 10.19 a; pg. 264 psoas major, iliacus
Iliopsoas video #24
39 II. Posterior Group pg. Fig. 10.20 a; page 366
A. Gluteus maximus #21 1. gloutos – (G) Buttock 2. O: Sacrum, coccyx & posterior surface of ilium 3. I: Posterior femur 4. A: Extend leg (hip) prime mover
40 Fig. 10.20 a; page 367 gluteus maximus & medius
Gluteus maximus video# 21
41
42 B. Gluteus medius #22 1. gloutos – (G) Buttock 2. O: Lateral surface of ilium 3. I: Greater trochanter 4. A: Abduct hip & rotate medially
C. Gluteus minimusJust remember there is one
Gluteus medius video #22
43 D. Tensor fasciae latae #52 1. Starbucks 2. O: Anterior iliac crest 3. I: Iliotibial band (fascia to the knee) 4 A: abducts, helps flex & medially rotate
44 Figure 10.19 a; page 364 tensor fasciae latae
Tensor fasciae latae video # 52
45 III. Adductor group – pulls leg medially Five Muscles in group
A. Adductor magnus 1. Adducts/big 2. O: Ischial tuberosity 3. I: Posterior femur surface 4. A: Adducts- prime mover, helps extend, & rotate thigh laterally other 4 are synergistic Fig. 10.19 b; page 364
46 Fig. 10.19 b; page 364 adductors/adductor magnus
47 Muscles that move the leg (lower leg)I. Hamstring group – Posterior leg Lower leg flexors; upper leg extensors Fig. 10.20 a ; pg. 367 A. Bicep femoris #22
1. Two heads for origin2. O: Ischial tuberosity & posterior femur surface3. I: Head of fibula & lateral tibial condyle4. A: Flex lower leg & extends thigh B. Semitendinosus #43
1. ?2. O: Ischial tuberosity
3. I: Medial tibia surface4. A: Flex lower leg & extend thigh
48 C.Semimembranous #411. ?:
2. O: Ischial tuberosity3. I: Medial tibia condyle4. A: Flex lower leg & extend thigh
49 Fig. 10.20 a ; pg. 367 Hamstrings
Bicep femoris video # 2
Semitendenosus video #43
Semimembranosus video #41
50 Anterior LegQuadriceps – Lower leg/knee extensors Fig. 10.19; pg. 364
A. Rectus femoris #37 1. straight muscle fibers on femur
2. O: Spine of ilium & Acetabulum3. I: Patellar tendon4.A:Extend lower leg
B. Vastus lateralis #61 1.lateral 2. O: Greater trochanter 3. I: Patellar tendon 4. A: Extend lower leg
51 C.Vastus medialis #62 1. medial 2. O: Medial surface of femur 3. I: Patellar tendon 4. A: Extend lower leg
D. Vastus intermedius #66 1. In between 2. O: Anterior lateral femur surfaces 3. I: Patellar tendon 4.A: Extends lower leg
52 Fig. 10.19; pg. 364 Quadriceps
Rectus femoris video # 37
Vastus lateralis video #61
Vastus medialis video #62
Vastus intermedius video #60
53 A. Sartorius #40
1. Tailors muscle –longest muscle 2. O: Anterior superior iliac spine 3. I: Medial surface of tibia 4. A: Synergistic: Flexes leg & thigh, abducts
& rotates thigh laterally & rotates lower leg
medially
Go backFig. 10.14b; pg. 251
Sartorius video #40
54 Muscles of the Ankle and Toes
Anterior Compartment I. Tibialis Anterior: #55 O (origin): lateral condyle distal 2/3 of tibia diaphysis I (insertion): medial cuneiform & 1st metatarsal A (action): Prime mover of Dorsiflexion
II. Extensor halicus longus #11 O: Anterior medial fibula shaft & interoseous membrane I: Distal phalanx of big toe A: Extend big toe (help w/ Dorsiflexion)
Table 10.15a pg. 371
Table 10.15b pg. 371
Tibialis anterior video #55
Table 10.15c pg. 371
Extensor halicus longus Video # 11
58
III. Extensor digitorum longus #10
O: Lateral condyle of tibia, proximal fibula & interosseous membrane/ligament
I: phalanges of toed 2-5
A: Prime mover: Toe extension
Table 10.15d pg. 371
Extensor digitorum longus video #10
60 Muscles of ankle & Toes Posterior chamber I. Gastrocnemius #20 O: Two heads at lateral & medial epicondyles of femur I: Posterior calcaneus via calcaneal/Achilles tendon A: planter flex foot when knees extended
II. Soleus #46 O: Superior surface of tibia, fibia & Interoseous tendon/membrane I: Same as gastrocnemeus A: Plantar flexion w/ knee flexion (walking)
Table 10.15a pg: 374
Gastrocnemius video #20
Table 10.15b pg. 371
Soleus Video #45
Rectus abdominis video #36
External obliques video #13
Internal obliques video #27
Transversus abdominus video # 57