shoulder, chest, arm, stomach, back muscles in the upper extremity
TRANSCRIPT
Shoulder, Chest, Arm, Stomach, Back
Muscles in the Upper Extremity
Shoulder Muscles
Trapezius DeltoidRotator Cuff
Trapezius (Traps)Function: Raises
head and shoulders
Origin: back of the neck and upper vertebrate
Insertion: clavicle and scapula
Deltoid (Delts)Function: Raises
the arm
Origin: the spine of the scapula and the clavicle
Insertion: the top of the humerus
Rotator Cuff Known of the SITS muscles
S - Superspiatus
I - Infraspinatus
T - Teres Minor
S - Subscapularis
BackRhomboidsLatissimus DorsiErector SpinaeQuadratus Lumborium
RhomboidsFunction: (deep
muscle) extends the scapula(under the teres major)
Origin: thoracic vertebrae
Insertion: front of scapula
Latissimus Dorsi (Lats)Function: moves
the arm backward
Origin: lumbar vertebrae
Insertion: humerus
Erector SpinaeFunction: straightens
the back
Origin: lower thoracic vertebrae and top of pelvis
Insertion: back of ribs and upper thoracic vertebrae
Quadratus LumborumFunction: Elevates
the hip and abducts the hip
Origin: back of ribs and upper thoracic
Insertion: vertebrae lower thoracic vertebrae and top of pelvis
Chest Muscles
Pectoralis MajorPectoralis Minor
Serratus Anterior
Pectoralis Major (Pecs)Function: Moves
the arm across the chest
Origin: sternum and clavicle
Insertion: medial and lateral top of the humerus
Pectoralis MinorFunction: Moves the
arm from a raised position down across the chest to the opposite hip
Origin: coricoid process of the scapula
Insertion: 3rd, 4th and 5th ribs
Serratus AnteriorFunction: Moves
the scapula forward
Origin: upper ribs / side of the ribs
Insertion: scapula
Quiz1. Name one of the two parts of muscle.2. The place where a muscle is anchored is
called what? 3. The temporalis and the masseter work
together to perform what function? 4. Name two of the six muscles of the
shoulder and back.5. What muscle group works in a pair with
your Lats (Latissimus Dorsi)?
Quiz/Review1. Name one of the two parts of muscle.
Tendon, Belly2. The place where a muscle is anchored is called what?
Origin3. The temporalis and the masseter work together to
perform what function? Move the lower jaw
4. Name two of the muscles of the shoulder and back.Traps, Delts, Rotator cuff, Lats, Erector Spinae,Rhomboids
5. What muscle group works in a pair with your Lats (Latissimus Dorsi)?
Pecs (Pectoralis Major)
Arm Muscles
BicepsTricepsBrachioradialisFlexor CarpiExtensor Carpi
BicepsFunction: flexes
arm (anterior)
Origin: side of the scapula
Insertion: radius/ulna
TricepsFunction:
extends/straightens arm (posterior)
Origin: side of the scapula and the humerus
Insertion: upper ulna
BrachioradialisFunction: flexes the
elbow
Origin: lateral epicondyle of humerus
Insertion: radius
Flexor CarpiFunction: Closes the
hand and fingers and flexes the wrist (anterior)
Origin: medial epicondyle of humerus
Insertion: metacarpals
Extensor CarpiFunction: Opens the
hand and fingers and extends the wrist (posterior)
Origin: lateral epicondyle of humerus
Insertion: metacarpals
Stomach & AbdomenRectus Abdominis
Abs
External Obliques
Internal Obliques
Rectus AbdominisFunction: flexes
trunk of the body & pulls ribs to pelvis
Important for posture
Origin: front of pelvis
Insertion: front of ribs
ObliquesExternal Oblique:
flexes the trunk of the body and twists torso
Origin: lower ribs
Insertion: top of pelvis
Internal Oblique: Same as external, except a deeper set of muscles