ch 11 - elbow joint muscles

Question 1

O: distal 1/2 of humerus, anterior surface

Answer 1

brachialis

Question 2

I: coronoid process and ulnar tuberosity of ulna

Answer 2

brachialis

Question 3

A: elbow flexion

Answer 3

brachialis

Question 4

N: musculocutaneous nerve (c5, c6)

Answer 4

brachialis

Question 5

workhorse of elbow joint

Answer 5

brachialis

Question 6

O: supraglenoid tubercle of scapula

Answer 6

long head of biceps

Question 7

O: coracoid process of scapula

Answer 7

short head of biceps

Question 8

I: radial tuberosity of radius

Answer 8

biceps brachii

Question 9

A: elbow flexion, forearm supination, assists in shoulder flexion

Answer 9

biceps brachii

Question 10

N: musculocutaneous nerve (C5, C6)

Answer 10

biceps brachii

Question 11

vertical line of pull and attaches obliquely on radius

Answer 11

biceps brachii

Question 12

most effective in supination when elbow is in 90 degrees of flexion

Answer 12

biceps brachii

Question 13

O: lateral supracondylar ridge on humerus

Answer 13

brachioradialis

Question 14

I: styloid process of radius

Answer 14

brachioradialis

Question 15

A: elbow flexion, assists in pronation and supination

Answer 15

brachioradialis

Question 16

N: radial nerve (C5, C6)

Answer 16

brachioradialis

Question 17

O: infraglenoid tubercle of scapula

Answer 17

long head of triceps muscle

Question 18

O: inferior to greater tubercle on posterior humerus

Answer 18

lateral head of triceps muscle

Question 19

O: posterior surface of humerus

Answer 19

medial head of triceps muscle

Question 20

I: olecranon process of ulna

Answer 20

triceps muscle

Question 21

A: elbow extension

Answer 21

triceps

Question 22

N: radial nerve (C6-8)

Answer 22

triceps

Question 23

O: lateral epicondyle of humerus

Answer 23

anconeus

Question 24

I: lateral and inferior to olecranon process of ulna

Answer 24

anconeus

Question 25

A: not a prime mover in any joint action, assists in elbow extension

Answer 25

anconeus

Question 26

N: radial nerve (C6-8)

Answer 26

anconeus

Question 27

O: medial epicondyle of humerus and coronoid process of ulna

Answer 27

pronator teres

Question 28

I: lateral aspect of radius at midpoint

Answer 28

pronator teres

Question 29

A: forearm pronation, assists in elbow flexion

Answer 29

pronator teres

Question 30

N: median nerve (C6, C7)

Answer 30

pronator teres

Question 31

diagonal line of pull

Answer 31

pronator teres

Question 32

O: distal 1/4 of radius

Answer 32

pronator quadratus

Question 33

I: distal 1/4 of radius

Answer 33

pronator quadratus

Question 34

A: forearm pronation

Answer 34

pronator quadratus

Question 35

N: median nerve (C8, T1)

Answer 35

pronator quadratus

Question 36

horizontal line of pull

Answer 36

pronator quadratus

Question 37

O: lateral epicondyle of humerus and adjacent ulna

Answer 37

supinator

Question 38

I: anterior surface of proximal radius

Answer 38

supinator

Question 39

A: forearm supination

Answer 39

supinator

Question 40

biceps, brachialis, brachioradialis are prime movers of

Answer 40

elbow flexion

Question 41

triceps and anconeus are prime movers of

Answer 41

elbow extension

Question 42

pronator teres and quadratus are prime movers of

Answer 42

forearm pronation

Question 43

biceps and supinator are prime movers of

Answer 43

forearm supination

Question 44

pronator teres and quadratus are innervated by what nerve?

Answer 44

median

Question 45

brachialis and biceps are innervated by what nerve?

Answer 45

musculocutaneous

Question 46

brachioradialis, triceps, anconeus, and supinator are innervated by what nerve?

Answer 46

radial