arm anatomy

Question 1

label this

Answer 1

its the ulna - medial side of arm

red = coronoid process

green = olecranon

yellow = trochelar notch

blue = radial notch

Question 2

lable this

Answer 2

yellow = radial head

blue = radial neck

red = radial tuberosity

Question 3

label this

Answer 3

capitulum and trohclear

head of radius and trachlear notch

olecranon

Question 4

label this

Answer 4

yellow = pronator teres

green = flexor carpi radialis

blue = palmaris longus

red = flexor carpi ulnaris

these are the 4 superfical muscles for the anterior forearm

Question 5

whar are these?

Answer 5

the 3 deep muscles of the anterior forerarm

green = pronator quadratus

red = flexor pollicis longus

blue = flexor digitorum profundus

Question 6

what are the superfical muscles of forearm innervated by?

what is the middle muscle (flexor digitorum superficialis) innervated by?

what are the 3 deep muscles innervated by?

Answer 6

median nerve

except flexor carpi unlaris = ulna nerve

median nerve

medial nerve

except ulna half of flexor digitorum profundus = ulna nerve

Question 7

what are the boarders of ther cubital fossa?

whats the contents?

Answer 7

medial border = pronator teres

lateral border = brachioradialis

superior = imaginary line between epicondyles

TAN

Tendon (biceps)

Artery (brachial)

Nerve (median nerve)

Question 8

in general what nerve supplies these muscle comparements:

anterior forearm

posterior forearm

anterior arm

posterior arm

Answer 8

median nerve

radial

musculocutaneous

radial

Question 9

what is the function and insersion and origins?

pronator teres?

flexor carpi radialis?

palmaris longus?

flexor carpi ulnaris ?

Answer 9

pronate, ?, medial epicondyle

wrist flexsion, wrist/carpals, medial epicondyle

wrist flexsion but not important, palm, medial epicondyle

wrist flexsion, wrist/carpals, medial epicondyle

Question 10

what is the function and insertion and origins?

flexor digitorum superficialis

flexor digitorum profundus

flexor pollicis longus

pronator quadratus

Answer 10

flex fingers at middle phalynx, muddle phalynx, medial epicondyle

flex fingers at distal phalynx, distal phalynx, ulna

flex thumb, thumb, radius

pronate, radius, ulna

Question 11

learn the ones with pink :)

Answer 11

Question 12

learn the ones with pink :)

Answer 12

Question 13

what are the 2 main ligaments in the elbow joint?

what contributes to the stability?

what position is the elbow most stable in?

Answer 13

radial collateral (lateral)

ulna collateral (medial)

ligaments, muscles, boney articulations (olecranon and coronoid)

fully flexed or fully extended

Question 14

what are the 2 main bursae?

Answer 14

1. subtendinous - betweeen triceps tendon and olecranon
2. subcutaneous/olecranon - between olecranon and skin

Question 15

what muscles do elbow flexsion?

Answer 15

1. biceps brachii
2. brachilais
3. brachoradialis

Question 16

where does the brachialis lay?

origin?

insertion?

nerve innervation?

Answer 16

under biceps

distal anterior humerus

ulna tuberosity

musculocutaneous

Question 17

where is the brachioradialis?

origin

insertion?

action?

innervation?

Answer 17

posterior comparement of arm/ lateral

supracondylar ridge of distal humerus

distal radius

elbow flexsion in mid pronated position

radial nerve

Question 18

where are the triceps?

what are the heads?

where are the inertions?

origin?

actions?

innervation?

Answer 18

posterior compartment upper arm

3 heads: long, medial and lateral

long = infraglenoid tubercle on scapula. medial = shaft of humerus under radial groove, lateral = shaft of humers above radial groove

olecranon on ulna

extend forearm at elbow and a little arm extension - weak

radial nerve

Question 19

what bone moves in pronation/supination?

Answer 19

radius moves over ulna