Muscle and tendons of the distal limb Flashcards
Where is the O and I of the extensor carpi radialis muscle?
O- lateral epicondyle of the humerus
I- Metacarpal bones
Where is the extensor carpi radialis muscle located?
Cranial aspect of the antebrachium
What is the function of the extensor carpi radialis muscle?
Carpal extensor
(crosses dorsal aspect of the carpus)
What nerve supplies the extensor carpi radialis muscle?
Radial nerve
What muscle crosses over the extensor carpi radialis muscle and is a useful landmark that can be used to identify it?
Oblique muscle
Where is the O and I of the common digital extensor muscle (CDE) located?
O- lateral epicondyle of the humerus
I- All digits
What part of the distal phalanx does the CDE insert onto?
Extensor process
Where is the CDE located?
Cranio-lateral aspect of the antebrachium
What is the function of the CDE?
Carpal extensor
Digital extensor
What nerve supplies the CDE?
Rdaial nerve
How many branches does the CDE tendon have in the dog?
4 (+1 to the dew claw)
How many branches does the CDE tendon have in the horse?
1
What protects the CDE tendon in the horse?
Joint capsules (bursae)
What ligaments branches does the CDE recieve?
Suspensory ligament
Where is the O and I of the extensor carpi ulnaris/ ulnaris lateralis muscle?
O- lateral epicondyle of humerus
I- metacarpal bone and ACB
Where is the extensor carpi ulnaris located?
Lateral aspect of antebrachium
What is the function of the extensor carpi ulnaris?
Carpus extensor
AND
CARPUS FLEXOR! (ACB)
What nerve supplies the extensor carpi ulnaris?
Radial nerve
What is the O and I of the flexor carpi ulnaris muscle?
O- medial epicondyle of humerus + olecranon process of ulna
I- ACB
How many heads does the flexor carpi ulnaris have?
2
(2 origins)
Where is the flexor carpi ulnaris muscle located?
Caudal aspect of the antebrachium
What is the function of the flexor carpi ulnaris muscle?
Carpal flexor
What nerves supply the flexor carpi ulnaris muscle?
Median and ulnar nerves
Where is the O and I of the superficial digital flexor muscle?
O- medial epicondyle
I- All digits (middle phalanx)
Where is the superficial digital flexor muscle located?
Caudal aspect of the limb
What is the function of the superficial digital flexor muscle?
Carpal flexor
Digital flexor
Where nerves supply the superficial digital flexor muscle?
Median and ulnar nerves
How many branches the SDFT have in the dog?
4 (+1 dew paw)
How many branches does the SDFT have in the horse?
1
What ligament is associated with the SDFT in the horse?
ACL (accessory check ligament)
What is the purpose of the accessory check ligament?
Limits length of tendon/ protects muscle belly
Where is the ACL associated with the SDFT located?
proximal to carpus
Why does the SDFT split distally?
Allows passage of DDFT which inserts into the distal phalanx
(SDFT- middle phalanx)
Where is the O and I of the deep digital flexor muscle?
O- medial epicondyle, radius and ulna
I - all digits (palmar processs of distal phalanx)
Where is the deep digital flexor muscle located?
Caudal aspect of the limb
What is the function of the deep digital flexor muscle?
Carpal flexor
Digital flexor
What nerves supply the deep digital flexor muscle?
Median and ulnar nerves
What part of the limb do the deep digital flexor tendons insert into?
Palmar aspect of the limb
What ligament does the Deep digital flexor tendon recieve?
Accessory check ligament (ACL)
Where is the ACL associated with the DDFT located?
distal to the carpus
What nerves supply the flexors of the distal limb?
Median and ulnar nerves
What nerve supplies the extensors of the distal limb?
Radial nerve
What O do all extensors of the distal limb have?
Lateral epicondyle of the humerus
What O do all flexors of the distal limb have?
Medial epicondyle of humerus
