forearm

Question 1

define supination

Answer 1

rotate forearm and hand so palm is facing superiorly

Question 2

define pronation

Answer 2

rotate forearm and hand so palm is facing down / posteriorly

Question 3

ulna forms what kind of joint w humerus?

Answer 3

hinge joint that has restricted movement

Question 4

radius forms what kind of joint w humerus?

Answer 4

ball and socket joint that has A LOT of movement

Question 5

anular ligament location and function

Answer 5

a “collar” around proximal part of radius to hold it in place

-> the radius spins within this ligament

Question 6

interosseous membrane location and function and what kind of joint it forms

Answer 6

attaches radius to ulna

forms syndesmosis joint between radius and ulna

is surface of attachment for many muscles

Question 7

define syndesmosis joint

Answer 7

a joint formed out of a large connective tissue structure holding two bones together

Question 8

interosseous membrane can transfer force from wrist to elbow only in what orientation?

Answer 8

supination

(in pronation, interosseous membrane is folded up)

Question 9

proximal radioulnar joint definition and location and function

Answer 9

synovial pivot joint

articulates w ulnar notch

allows motion of radius from supination to pronation

Question 10

distal radioulnar joint definition and location and function

Answer 10

synovial pivot joint

articulates w radial notch

allows motion of radius from supination to pronation

Question 11

digit I =

Answer 11

pollex

Question 12

digit II =

Answer 12

indicis

Question 13

digiti V =

Answer 13

digiti minimi

Question 14

brachial artery branches into what 2 arteries?

Answer 14

radial artery
ulnar artery

Question 15

ulnar artery branches into what 2 arteries?

Answer 15

anterior interosseous artery
posterior interosseous artery

Question 16

lateral antebrachial cutaneous nerve comes from what nerve?

Answer 16

musculocutaneous nerve

Question 17

posterior antebrachial cutaneous nerve comes from what nerve?

Answer 17

radial nerve

Question 18

ulnar nerve branches into what?

Answer 18

DOES NOT branch

Question 19

median nerve branches into what nerve?

Answer 19

anterior interosseous nerve

Question 20

radial nerve branches into what 2 nerves?

Answer 20

superficial radial nerve
deep radial nerve

Question 21

deep radial nerve becomes what nerve? when?

Answer 21

posterior interosseous nerve after emerging from supinator

Question 22

what are the 3 deep extensor muscles that “poke out” from underneath superficial extensor muscles to go to the thumb? (laterally → medially)

Answer 22

abductor pollicis longus m.
extensor pollicis brevis m.
extensor pollicis longus m.