Antebrachium and carpus Flashcards
What basc joints are in the antebrachium-carpal region?
Radio-carpal, intercarpal, carpo-metacarpal joints
What are the major bones in the antebrachium?
Radius, ulna, and carpals
What are the compartments in the antebrachium?
Caudal and craino-ventral
What artery supplies the caudal compartment?
median a., ulnar a., and radial a.
What nerve supplies the caudal compartment?
Median and ulnar n.
What action is the caudal compartment responsible for?
Flexion of carpus and digits
What artery supplies the craino-ventral compartment?
Superficial brachial a.
What nerve supplies the craino-ventral compartment?
Radial n.
What action is the craino-ventral compartment responsible for?
Extension of carpus and digits
What are the two rows of carpals?
Proximal and distal
What are the proximal carpals?
radial, intermediate, ulnar, and accessory
What is the most mobile joint in the carpus of a carnivore?
antebrachiocarpal joint
How does the carpal joint act in an ungulate?
As a hinge - some oblique movements
Where does the median n. enter the forearm?
Medial collateral ligament of elbow joint
What is different about the horse ulnar n.?
does not unit with median nerve in brachiumq
When does the ulnar n. break off from the median n. in dogs?
olecranon
What branches off the ulnar n. in the brachium?
cutaneous antebrachial n.
What muscles do the musculocutaneous n. innervate?
none in the antebrachium or the carpus
What does the musculocutaneous n. do in the antebrachium?
medial cutaneous antebrachial n. innervates medial aspect
What does the cutaneous branch of the musculocutaneous muscle do?
continues past the carpus and to the metacarpophalangeal jt.
What is the main blood supply in the antebrachium (4 arteries)?
common interosseous a., median a, ulnar a., and radial a.
What branches off the median a.?
radial a. and deep antebrachial a.
What is the positioning of the cephalic v. in the forelimb?
follows cranial border of the forearm, lies on the extensor carpi radialis
What is the general origin of the craniolateral muscle group?
Lateral epicondyle
What are the extensor muscles (name wise) of the craniolateral muscle group?
E. carpi radialis
E. digitorum communis
E. digitorum lateralis
E. digiti I
What are the other muscles (not the extensors) of the craniolateral group?
Brachioradialis
Supinator
Ulnaris lateralis
Abductor digiti I longus
What small muscle of the forearm is hard to find in dogs but is present in cats?
Brachioradialis
