Thoracis limb intrinsic muscle (forearm)

list the Craniolateral muscles of the forearm

1. Extensor carpi ulnaris

2. common digital extensor

3. lateral digital extensor

4. ulnaris lateralis

5. supinator

6. abductor pollicuis longus 

what is the general action of the craniolateral muscles

extend the carpus and digits

list the origin, insertion, and action of the extensor carpi radialis

origin: lateral supracondylar crest

insertion: dorsal surface of the base of metacarpals 2 and 3

Action: extend the carpus

cephalic venipuncture takes place on top of what muscle

extensor carpi radialis

list the origin, insertion, and action of the common digital extensor

Origin: lateral epicondyle

insertion: extensor process of the distal phalanges of digits 2-5

Action: extend the carpus and digits

what is the action of the lateral digital extensor

to extend the carpus and digits 3-5

what is the action of the ulnaris lateralis

to abduct and extend the carpal joint

what is the action of the supinator

supination of the paw

what is the action of the abductor pollicis longus

to abduct digit 1 and extend the carpus

what are the caudomedial muscles of the forearm

1. pronator teres

2. flexor carpi radialis

3. superficial digital flexor

4. flexor carpi ulanris

5. Deep digital flexor

6. pronator quadratus

7. interosseus

what is the general action of the caudomedial muscles of the forearm 

flex the carpus and the digits 

what is the action of the pronator teres

pronation of the paws

what is the action of the flexor carpi radialis

to flex the carpus

list the origin, insertion, and action of the superficial digital flexor

origin: medial epicondyle

Insertion: palmar surface of the middle phalanges of digits 2-5

action: to flex the carpus and digits

list the origin, insertion, and action of the Flexor carpi ulnaris 

Origin:

• humeral = medial epicondyle

• ulnar = caudomedial surface of the olecranon

insertion: accessory carpal bone

action: flex the carpus

list the origin, insertion, and action of the deep digital flexor

origin:

• humeral = medial epicondyle

• ulnar = caudal border of ulna

• radial = medial border of the radius

insertion: palmar surface of the base of the distal phalanx of each digit

Action: flex the carpus and digits

what is the manica flexoria 

a sleeve that allows the deep digital flexor to continue down the digits through the superficial digital flexor 

what is the action of the pronator qudratus

pronation of paws

list the origin, insertion, and action of the interosseous

origin: proximal ends of metacarpal bones 2-5

insertion: proximal end of first phalanx

action: flexion of metacarpophalangeal joints