Lecture 6 - Muscles

Question 1

What is the origin of the brachioradialis?

Answer 1

lateral supracondylar crest of humerus

Question 2

What is the insertion of the brachioradialis?

Answer 2

distal 1/4 of the radius

Question 3

What is the nerve of the brachioradialis?

Answer 3

radial n.

Question 4

What is the action of the brachioradialis?

Answer 4

supinator of forearm and flexor of the elbow

Question 5

What is the origin of the extensor carpi radialis?

Answer 5

lateral epicondyle of humerus

Question 6

What is the insertion of the extensor carpi radialis?

Answer 6

small tuberosities on the dorsal surfaces of the base of the metacarpals II and II

Question 7

What is the nerve of the extensor carpi radialis?

Answer 7

Radial n.

Question 8

What is the action of the extensor carpi radialis?

Answer 8

extend the carpal joints

Question 9

What is the origin of the extensor digitorum communis?

Answer 9

lateral epicondyle of humerus

Question 10

What is the insertion of the extensor digitorum communis?

Answer 10

extensor processes of distal phalanges of digits II - IV

Question 11

What is the nerve of the extensor digitorum communis?

Answer 11

Radial n.

Question 12

What is the action of the extensor digitorum communis?

Answer 12

extend the joints of four principal digits and the carpus

Question 13

What is the origin of the extensor digitorum lateralis?

Answer 13

lateral epicondyle crest of humerus

Question 14

What is the insertion of the extensor digitorum lateralis?

Answer 14

proximal ends of all phalanges of digits III-V, but mainly the extensor processes of the distal phalanges of these digits

Question 15

What is the nerve of the extensor digitorum lateralis?

Answer 15

Radial n.

Question 16

What is the action of the extensor digitorum lateralis?

Answer 16

Extend carpus and joints of digits III-V

Question 17

What is the origin of the ulnaris lateralis?

Answer 17

lateral epicondyle of the humerus

Question 18

What is the insertion of the ulnaris lateralis?

Answer 18

lateral aspect of the proximal end of metacarpal V and accessory carpal bone

Question 19

What is the nerve of the ulnaris lateralis?

Answer 19

Radial n.

Question 20

What is the action of the ulnaris lateralis?

Answer 20

Abduct the manus, flex carpal joint, support carpus when extended to support weight

Question 21

What is the origin of the abductor digiti I longus?

Answer 21

lateral border and cranial surface of ulna, interosseous membrane

Question 22

What is the insertion of the abductor digiti I longus?

Answer 22

proximal end of metacarpal I

Question 23

What is the nerve of the abductor digiti I longus?

Answer 23

Radial n.

Question 24

What is the action of the abductor digiti I longus?

Answer 24

abduct first digit or pollex and extend carpal joints

Question 25

What is the origin of the supinator?

Answer 25

lateral epicondyle of humerus

Question 26

What is the insertion of the supinator?

Answer 26

cranial surface of the proximal fourth of radius

Question 27

What is the nerve of the supinator?

Answer 27

Radial n.

Question 28

What is the action of the supinator?

Answer 28

Supinator of forearm and flexor of the elbow

Question 29

What is the origin of the pronator teres?

Answer 29

medial epicondyle of humerus

Question 30

What is the insertion of the pronator teres?

Answer 30

medial border of radius between proximal and middle thirds

Question 31

What is the nerve of the pronator teres?

Answer 31

Median n.

Question 32

What is the action of the pronator teres?

Answer 32

pronate antebrachium and flex elbow

Question 33

What is the origin of the pronator quadratus?

Answer 33

distal ulna

Question 34

What is the insertion of the pronator quadratus?

Answer 34

distal radius

Question 35

What is the nerve of the pronator quadratus?

Answer 35

Median n.

Question 36

What is the action of the pronator quadratus?

Answer 36

Pronate antebrachium

Question 37

What is the origin of the flexor carpi radialis?

Answer 37

medial epicondyle of humerus and medial border of radius

Question 38

What is the insertion of the flexor carpi radialis?

Answer 38

palmar side of base of metacarpals II and II

Question 39

What is the nerve of the flexor carpi radialis?

Answer 39

median n.

Question 40

What is the action of the flexor carpi radialis?

Answer 40

flex carpus

Question 41

What is the origin of the flexor carpi ulnaris?

Answer 41

Ulnar - caudal border and medial surface of olecranon | Humeral - medial epicondyle of humerus

Question 42

What is the insertion of the flexor carpi ulnaris?

Answer 42

accessory carpal bone

Question 43

What is the nerve of the flexor carpi ulnaris?

Answer 43

ulnar n.

Question 44

What is the action of the flexor carpi ulnaris?

Answer 44

flex carpus

Question 45

What is the origin of the flexor digitorium superficialis?

Answer 45

medial epicondyle of humerus

Question 46

What is the insertion of the flexor digitorium superficialis?

Answer 46

palmar surface of the base of middle phalanges of digits II-V

Question 47

What is the nerve of the flexor digitorium superficialis?

Answer 47

median n.

Question 48

What is the action of the flexor digitorium superficialis?

Answer 48

flex carpal, metacarpophalangeal and proximal interphalangeal joints of II-V

Question 49

What are the heads of the flexor digitorium profundus?

Answer 49

humeral, ulnar, radial

Question 50

What is the insertion of the flexor digitorium profundus?

Answer 50

flexor tubercle on palmar surface of distal phalanx of each digit

Question 51

What is the nerve of the flexor digitorium profundus?

Answer 51

median n and ulnar n

Question 52

What is the action of the flexor digitorium profundus?

Answer 52

flex carpal and metacarpophalangeal joints and proximal and distal interphalangeal joints of digits