Muscles of the Upper Limb 2

Question 1

what are the anterior forearm muscles?

Answer 1

pronators (teres snd quadratus)
flexor carpi (radialis and ulnaris)
palmaris longus
flexor digitorum (superficialis and profundus)
flexor pollicis longus

Question 2

what is the function of the pronator teres?

Answer 2

pronates forearm

Question 3

what is the function of the flexor carpi radialis?

Answer 3

flexes and abducts hand

Question 4

what is the function of the palmaris longus?

Answer 4

tenses fascia of palm

Question 5

what is the function of the flexor carpi ulnaris?

Answer 5

flexes and adducts hand

Question 6

what is the function of the flexor digitorum superficialis?

Answer 6

flexes hand and 2nd-5th digits

Question 7

what is the function of the flexor digitorum profundus?

Answer 7

flexes 2nd-5th digits

Question 8

what is the function of the flexor pollicis longus?

Answer 8

flexes thumb

Question 9

what is the function of the pronator quadratus?

Answer 9

pronates forearm

Question 10

what is the cubital fossa?

Answer 10

triangular shaped region on the anterior elbow surface

Question 11

what forms the medial boundary of the cubital fossa?

Answer 11

pronator teres

Question 12

what forms the lateral boundary of the cubital fossa?

Answer 12

brachioradialis

Question 13

what forms the superior boundary of the cubital fossa?

Answer 13

line through medial and lateral epicondyles

Question 14

what forms the floor of the cubital fossa?

Answer 14

supinator and brachialis

Question 15

what forms the roof of the cubital fossa?

Answer 15

fascia, adipose, skin

Question 16

what does the cubital fossa contain?

Answer 16

radial nerve
biceps brachii tendon
brachial artery and radial and ulnar branches
median nerve

Question 17

What is the medical relevance of the cubital fossa?

Answer 17

common area for drawing blood, median cubital vein

Question 18

what are flexor retinaculum

Answer 18

thickenings of the antebrachial fascia that bind down the flexor tendons, forms the roof of the carpal tunnel

Question 19

what is the function of the palmar aponeurosis?

Answer 19

continuous with flexor retinaculum and receives tendon of the palmaris longus (invests muscles of palm)

Question 20

what is the carpal tunnel?

Answer 20

an osseofascial space posterolaterally by carpals and anteriorly by flexor retinaculum

Question 21

what does the carpal tunnel contain?

Answer 21

median nerve
tendons of flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus

Question 22

what is the common flexor sheath?

Answer 22

synovial sheath in the carpal tunnel and contains tendons of the flexor digitorum profundus and flexor digitorum superficialis

Question 23

what is the function of the common flexor sheath?

Answer 23

reduces friction as tendons pass through the tunnel

Question 24

what are the posterior forearm muscles?

Answer 24

brachioradialis
extensor carpi radialis (longus and brevis)
extensor digitorum
extensor carpi ulnaris
supinator
abductor pollicis longus
extensor pollicis (longus and brevis)
extensor indicis

Question 25

what is the function of the brachioradialis

Answer 25

flexes forearm

Question 26

what is the function of the extensor carpi radialis

Answer 26

extends and abducts hand

Question 27

what is the function of the extensor digitorum

Answer 27

extends 2nd-5th digits

Question 28

what is the function of the extensor carpi ulnaris?

Answer 28

extends and adducts hand

Question 29

what is the function of the supinator

Answer 29

supinates forearm

Question 30

what is the function of the abductor pollicis longus

Answer 30

abducts and extends thumb

Question 31

what is the function of the extensor pollicis longus and brevis

Answer 31

extends the thumb

Question 32

what is the function of the extensor indicis?

Answer 32

extends 2nd digit

Question 33

what is the anatomical snuff box formed by?

Answer 33

medially by tendons of the extensor pollicis longus laterally by tendons of extensor pollicis brevis and adductor pollicis longus

Question 34

what does the anatomical snuff box contain?

Answer 34

radial artery

Question 35

what are extensor retinaculum?

Answer 35

thickenings of antebrachial fascia that bind down extensor tendons

Question 36

what envelops the extensor tendons? why?

Answer 36

synovial sheaths, reduce friction as tendons pass under extensor retinaculum