Lab 14- Thoracic Limb Continued

Question 1

Carpal bones

Answer 1

• proximal row: radial carpal (medial), intermediate carpal, ulnar bone (lateral), and accessory carpal bone(lateral) (on palmar surface palmar to ulnar carpal bone)
• distal row: second carpal bone (small) (medial), third carpal bone, fourth carpal bone (lateral)

Question 2

what carpal bone receives tendinous insertions

Answer 2

accessory carpal bone

Question 3

extensor retinaculum

Answer 3

bind s down extensor tendons on dorsal surface of carpus

Question 4

flexor retinaculum

Answer 4

binds down the flexor tendons in carpal canal

Question 5

palmar branch of ulnar nerve ->

Answer 5

lateral palmar nerve -> deep branch -> lateral and medial palmar metacarpal nerve

Question 6

median ->

Answer 6

contributes to both lateral and medial palmar nerves

Question 7

lateral and medial palmar nerves continue as

Answer 7

lateral and medial palmar digital nerves at level of the fetlock

Question 8

communicating branch nerve thoracic limb

Answer 8

communicating branch between medial palmar nerve and lateral palmar nerve at level of mid cannon bone, caudally on surface of SDF tendon; has implications for anesthesia when doing regional blocks

Question 9

path of blood as it enters the distal limb

Answer 9

on palmar aspect of limb
Proximal limb: axillary -> brachial ->
1. median 
2a.palmar branch of median
3a. med palmaer
4a. med digital
5a. dorsal branch to p1
6a. dorsal branch to p2
7a. dorsal branch to p3
8a. Branch to digital cushion
2b.radial artery

on dorsal aspect of limb
Proximal limb: axillary -> brachial ->
1. transverse cubital
2. Rete carpi

Question 10

metacarpal bones

Answer 10

II- md splint
III- cannon bone
IV- lateral splint

Question 11

metacarpal tuberosity on MC III

Answer 11

on dorsomedial surface of proximal end

Question 12

passive stay apparatus components forelimb

Answer 12

• biceps brachii tendon
• lacerates fibrosis
• extensor carpi radialis
• collateral ligaments of elbow joint
• palmar carpal ligament
• suspensory apparatus
• proximal and distal check ligaments

Question 13

function of passive stay apparatus

Answer 13

• helps prevent the collapse of the limb with minimal muscular strain

Question 14

proximal check ligament

Answer 14

-goes to SDF

Question 15

study limb cross sections

Answer 15

study cross sections of distal limb and be able to ID nerves, blood vessels, bones, and tendon structures;

DO THE PROSECTOINS

Question 16

Median and ulnar nerves branch to

Answer 16

medial and lateral palmar nerves and medial and lateral palmar metacarpal nerves

Question 17

boney prominences of the humerus

Answer 17

medial and lateral epicondyles

Question 18

medial epicondyle of the humerus

Answer 18

rounded circular bony projection out toward side of humerus on distal end
this is where flexors of carpus/ digits attach

Question 19

lateral epicondyle of the humerus

Answer 19

rounded circular bony projection out board side of humerus on distal end, this is where extensors of carpus/ digits attach

Question 20

radius bony prominences

Answer 20

lateral and medial styloid process, extensor grooves

Question 21

lateral and medial styloid process of radius

Answer 21

lateral is distal attachment point of lateral ligaments

- styloid processes are v distal on radius kind of jut out to side

Question 22

extensor grooves of radius

Answer 22

at distal end of radius there are 3 cranial grooves

• lateral groove
• middle groove
• medial groove

Question 23

lateral extensor groove of radius

Answer 23

for the tendon of the common digital extensor

Question 24

middle extensor groove of radius

Answer 24

for the tendon of the extensor carpi radialis

Question 25

medial extensor groove of radius

Answer 25

is small and shallow, guides tendon of flexor carpi radialis