Large animal Thoracic limb vessels and nerves Flashcards
Median a. changes to ______ at carpus
medial palmar a.
Medial palmar a.
main blood supply to the digit, divides to form palmar digital a. Just proximal to the fetlock
Medial palmar digital a.
on abaxial surface of proximal sesamoid bones, terminates as the terminal arch
Lateral palmar digital a.
on abaxial surface of proximal sesamoid bones terminates as the terminal arch
Gives major blood supply to digit
medial palmar a.
Median n. splits at level of carpus into…
- medial palmar n.
- Lateral palmar n.
Lateral palmar n.
connects med & lat palmar n. at level of the mid-metacarpal bone
Median n. change at the level of the fetlock…
Medial palmar digital n. & lateral palmar digital n.
Deep br. of lateral palmar n. (@level of carpus)
dives into suspensory ligament, just palmar to MCIII
Medial palmar metacarpal n.
close association w/ axial surface of splint bone (2nd metacarpal)
Lateral palmar metacarpal n.
close association w/ axial surface of splint bone (4th metacarpal)
Nerve name change at fetlock
medial and lateral palmar n. -> med/lat palmar DIGITAL n.
Median nerve splits at the carpus into….
medial and lateral branches
Ulnar nerve splits at the carpus into…
palmar and dorsal br.
Palmar br. of ulnar n. joins lateral br. of median n. to form…
lateral palmar n.
Ulnar n.
- like dog: found b/t medial humoral epicondyle and tuber olecranon
- supplies cutaneous innervation to distal medial aspect of the brachium and caudal aspect of the antecrachium
- bifurcates just above the carpus
Dorsal br. of ulnar n.
to skin-Lat/Dor metacarpal area
Palmar br. of ulnar n.
joins w/ lat br. of the median n. to form the lateral palmar n.
Minimal innervation to ____ aspect of front limb by cutaneous nerves only
dorsal
What nerve is likely damaged in a cat knuckling, preventing extension of the carpus and digits?
radial n.
Musculocutaneous n. action
flexes elbow (biceps)
Axillary n. action
flex the shoulder
Median and ulnar n. action
flex carpus and digits
What nerve is likely damaged in a horse resulting in the muscle atrophy referred to as “Sweeny”?
Suprascapular n.
In a dog: which artery may be seen coursing toward the axillary lymph node, supply the deep pectoral, and travel w/ a nerve of the same name?
Lateral thoracic n.
A dog sustained an injury to the dorsal aspect of his antebrachium. You poke his paw with a pin and determine that he has no sensation to the dorsal aspect of his paw over digits 1-4. Sensory branches of what nerve have likely been damaged?
Radial nerve (under lateral belly of triceps)
Diagnostic nerve blocks
work from most distal towards proximal
