Muscles of the shoulder and arm

Question 1

Locate the rhomboid major/minor

Answer 1

under trapezius
Major-larger and inferior
Minor-smaller and superior

Question 2

Locate the levator scapulae

Answer 2

Under trapezius most lateral of neck

Question 3

Locate the teres major

Answer 3

bottom of scapula under infraspinatus

Question 4

Locate the serratus anterior

Answer 4

Muscles that connect vertebrae to ribs

Question 5

Locate the trapezius and what is its action

Answer 5

Trap and moves scapula

Question 6

Locate the latissimus dorsi and what is its action

Answer 6

lat and it extends the shoulder and medially rotates the arm

Question 7

Locate the pectoralis major(clavicular, sternal, and abdominal parts) and what is its action

Answer 7

pec and it flexes and adducts the arm

Question 8

Locate the pectoralis minor and what is its action

Answer 8

under pec major and it depresses the scapula

Question 9

Locate the deltoid and give its origin, insertion, and action

Answer 9

Location- shoulder
Origin-lateral 1/3 of clavicle, acromion, and scapular spine
Insertion-deltoid tuberosity
Action-extends and flexes shoulder, abducts arm

Question 10

Locate the biceps brachii and give its origin, insertion, and action

Answer 10

o Origin (long head): upper lip of glenoid cavity
o Origin (short head): tip of coracoid process
o Insertion (both heads): radial tuberosity
o Action (both heads): flexes the elbow and shoulder; supinates the forearm and
the hand

Question 11

Locate and give the origin, insertion, and action of the coracobrachialis

Answer 11

o Origin: coracoid process
o Insertion: shaft of humerus
o Action: flexes the shoulder; adducts the arm

Question 12

Locate and give the origin, insertion, and action of the brachialis

Answer 12

o Origin: shaft of humerus
o Insertion: ulnar tuberosity
o Action: flexes the elbow

Question 13

Locate and give the origin, insertion, and action of the triceps brachii

Answer 13

o Origin (long head): lower lip of glenoid cavity
o Origin (lateral head): proximal posterolateral shaft of humerus
o Origin (medial head): proximal posteromedial shaft of humerus
o Insertion: olecranon
o Action: extends the elbow; extends the shoulder; adducts the arm