Muscles Of Antebrachium And Manus

Question 1

Anatomy of tendon sheath

Answer 1

Mesotendon - attaches tendon to underlying bone
Synovial cavity - surrounds tendon
Synovial covering of tendon
Synovial living of cavity
Synovial sheath

Question 2

Functional groupings : extensors

Answer 2

Extensors of carpus & digits : craniolateral
Origin :Lateral (extensor) epicondyle of humerus
Attach on lateral side

Question 3

Functional groups : flexors

Answer 3

Flexors of carpus & digits : caudomedial
Origin : medial (flexor) epicondyle of humerus

Question 4

Flexor manica

Answer 4

Superficial digital flexor tendon divides to allow deep digital flexor tendon to pass, attaches p2 to p3
Extremely large in horses

Question 5

Functional groups : supinator/pronator

Answer 5

Supinator
Pronator teres
Pronator quadratus (bridges radius /ulna)

Question 6

Muscles of manus in cat vs dog

Answer 6

Brachioradialis - well developed vs dog
Muscle bellies tend to be longer/farther down tendon
Muscles of manus more developed, finer use of claws vs dogs
Specialized distal phalanges

Question 7

Medial dorsal elastic ligament

Answer 7

Maintains hyper extension of p3 in cats (tucked)
Largest retractor ligament
Claws out = flexion