topic 16

Question 1

what is the main artery of the antebrachium, and what are its branches

Answer 1

PALMAR/MEDIAL
A. Mediana
(continues to the common digital palmar branches –> prorius digital palmar)

1 - a. radialis
(arcus palm supf with a. interossea caud)
(arcus palm prof with a. ulnaris)

the a. interossea caud also give off the palm dig propr abax V

Question 2

what arteries supply the dorsal aspect of the antebrachium/carpus/digits

Answer 2

1 - a. antebr supf cran med: communis+proprius braches II(ax)-V
2 - a. antebr supf cran lat: proprius brnaches to I-II(abax)
3 - rete carpi dordalis: r. carp dors(ex radial), r. interosseus, r. carp dors(ex ulnar)
4 - r. dors ex a. ulnar proprius (abax) V

Question 3

what are the carpal and digital flexors of the FL

Answer 3

1. m. flex carpi uln
2. m. flex carpi rad
3. m. flex dig supf
4. m. flex dig prof

Question 4

what is the direction of supernation

Answer 4

M -> L

Question 5

which muscles does the ulnar nerve innervate

Answer 5

m. flex. carpi ulnare

DDF except the radial head

Question 6

what group of muscles does the median nerve innervate

Answer 6

antebrachial flexors, and skin on palmar aspect

Question 7

describe the heads of the DDF

Answer 7

humeral: biggest
Ulnar:
Radial: smallest

Question 8

describe the heads of the ulnar carpal flexor

Answer 8

ulnar: smaller and tendinous
humeral: biggest

this is the most superficial/caudal muscle except SDF!
m. flex carpi rad: med/deep to it, shorter

Question 9

where will you find the median artery

Answer 9

fused to the median nerve, under m. flexor carpi radialis and the humeral head of DDF

Question 10

where does the a. ulnaris run

Answer 10

Runs caudodistally betwwen ulna and humeral head of DDF

Question 11

where does a. radialis branch out from the median

Answer 11

distal to the m. pronator teres