Muscle and tendons of the distal limb

Question 1

Where is the O and I of the extensor carpi radialis muscle?

Answer 1

O- lateral epicondyle of the humerus
I- Metacarpal bones

Question 2

Where is the extensor carpi radialis muscle located?

Answer 2

Cranial aspect of the antebrachium

Question 3

What is the function of the extensor carpi radialis muscle?

Answer 3

Carpal extensor
(crosses dorsal aspect of the carpus)

Question 4

What nerve supplies the extensor carpi radialis muscle?

Answer 4

Radial nerve

Question 5

What muscle crosses over the extensor carpi radialis muscle and is a useful landmark that can be used to identify it?

Answer 5

Oblique muscle

Question 6

Where is the O and I of the common digital extensor muscle (CDE) located?

Answer 6

O- lateral epicondyle of the humerus
I- All digits

Question 7

What part of the distal phalanx does the CDE insert onto?

Answer 7

Extensor process

Question 8

Where is the CDE located?

Answer 8

Cranio-lateral aspect of the antebrachium

Question 9

What is the function of the CDE?

Answer 9

Carpal extensor
Digital extensor

Question 10

What nerve supplies the CDE?

Answer 10

Rdaial nerve

Question 11

How many branches does the CDE tendon have in the dog?

Answer 11

4 (+1 to the dew claw)

Question 12

How many branches does the CDE tendon have in the horse?

Answer 12

1

Question 13

What protects the CDE tendon in the horse?

Answer 13

Joint capsules (bursae)

Question 14

What ligaments branches does the CDE recieve?

Answer 14

Suspensory ligament

Question 15

Where is the O and I of the extensor carpi ulnaris/ ulnaris lateralis muscle?

Answer 15

O- lateral epicondyle of humerus
I- metacarpal bone and ACB

Question 16

Where is the extensor carpi ulnaris located?

Answer 16

Lateral aspect of antebrachium

Question 17

What is the function of the extensor carpi ulnaris?

Answer 17

Carpus extensor
AND
CARPUS FLEXOR! (ACB)

Question 18

What nerve supplies the extensor carpi ulnaris?

Answer 18

Radial nerve

Question 19

What is the O and I of the flexor carpi ulnaris muscle?

Answer 19

O- medial epicondyle of humerus + olecranon process of ulna
I- ACB

Question 20

How many heads does the flexor carpi ulnaris have?

Answer 20

2
(2 origins)

Question 21

Where is the flexor carpi ulnaris muscle located?

Answer 21

Caudal aspect of the antebrachium

Question 22

What is the function of the flexor carpi ulnaris muscle?

Answer 22

Carpal flexor

Question 23

What nerves supply the flexor carpi ulnaris muscle?

Answer 23

Median and ulnar nerves

Question 24

Where is the O and I of the superficial digital flexor muscle?

Answer 24

O- medial epicondyle
I- All digits (middle phalanx)

Question 25

Where is the superficial digital flexor muscle located?

Answer 25

Caudal aspect of the limb

Question 26

What is the function of the superficial digital flexor muscle?

Answer 26

Carpal flexor Digital flexor

Question 27

Where nerves supply the superficial digital flexor muscle?

Answer 27

Median and ulnar nerves

Question 28

How many branches the SDFT have in the dog?

Answer 28

4 (+1 dew paw)

Question 29

How many branches does the SDFT have in the horse?

Answer 29

1

Question 30

What ligament is associated with the SDFT in the horse?

Answer 30

ACL (accessory check ligament)

Question 31

What is the purpose of the accessory check ligament?

Answer 31

Limits length of tendon/ protects muscle belly

Question 32

Where is the ACL associated with the SDFT located?

Answer 32

proximal to carpus

Question 33

Why does the SDFT split distally?

Answer 33

Allows passage of DDFT which inserts into the distal phalanx (SDFT- middle phalanx)

Question 34

Where is the O and I of the deep digital flexor muscle?

Answer 34

O- medial epicondyle, radius and ulna I - all digits (palmar processs of distal phalanx)

Question 35

Where is the deep digital flexor muscle located?

Answer 35

Caudal aspect of the limb

Question 36

What is the function of the deep digital flexor muscle?

Answer 36

Carpal flexor Digital flexor

Question 37

What nerves supply the deep digital flexor muscle?

Answer 37

Median and ulnar nerves

Question 38

What part of the limb do the deep digital flexor tendons insert into?

Answer 38

Palmar aspect of the limb

Question 39

What ligament does the Deep digital flexor tendon recieve?

Answer 39

Accessory check ligament (ACL)

Question 40

Where is the ACL associated with the DDFT located?

Answer 40

distal to the carpus

Question 41

What nerves supply the flexors of the distal limb?

Answer 41

Median and ulnar nerves

Question 42

What nerve supplies the extensors of the distal limb?

Answer 42

Radial nerve

Question 43

What O do all extensors of the distal limb have?

Answer 43

Lateral epicondyle of the humerus

Question 44

What O do all flexors of the distal limb have?

Answer 44

Medial epicondyle of humerus