Muscles of the Carpal and Digital joints Flashcards Preview

week 3 - forelimb > Muscles of the Carpal and Digital joints > Flashcards

Flashcards in Muscles of the Carpal and Digital joints Deck (24)
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1

Origin of extensors

Lateral epicondyle, exept for M. extensor carpi radialis

2

Origin of flexors

Medial epicondyle

3

Origin of M. extensor carpi radialis

Crista supracondylaris lateralis of the humerus

4

Insertion of M. extensor carpi radialis

Proximal-dorsal ends of McII and McIII

5

Function of M. extensor carpi radialis

Extension of the CARPUS; Flexion of the ELBOW joint

6

Insertion of M. extensor digitorum communis

Dorsal aspect of the crista unguicularis (P3)

7

Function of M. extensor digitorum communis

Extension of the Carpus and digits II-V

8

Insertion of M. extensor digitorum lateralis

Dorsal aspect of the crista ungicularis (P3) via the tendons of M. extensor digitorum communis

9

Function of M. extensor digitorum lateralis

Extension of digits III-V

10

Insertion of M. extensor carpi ulnaris (M. ulnaris lateralis)

Proximo-lateral end of McV and accessory carpal bone

11

Function of M. extensor carpi ulnaris (M. ulnaris lateralis)

Flexion of the Carpus. The muscle's insertion lies palmar to the Carpal joint's axis of rotation - so this muscle looks like an extensor, but actually is a flexor

12

Origin of M. abductor digiti I longus (M. abductor pollicis longus)

Lateral surfaces of the Radius and Ulna

13

Insertion of M. abductor digiti I longus (M. abductor pollicis longus)

Proximo-medial end of McI. there is a sesamoid bone in the tendon of insertion

14

Insertion of M. flexor carpi radialis

Proximo-palmar ends of McII and McIII

15

Function of M. flexor carpi radialis

Flexion of the Carpus

16

Insertion of M. flexor digitorum superficialis

Palmar tubercules proximally on P2 of digits II-V

17

Function of M. flexor digitorum superficialis

Flexion of the metacarpophalangal joint and proximal interphalangal joint (i.e. between P1 and P2) of digits II-V; Flexion of the Carpus

18

Insertion of M. flexor carpi ulnaris

Distal end of the Os carpi accessorium

19

Function of M. flexor carpi ulnaris

Flexion of the Carpus; Passive support of the Carpus and prevention of excessive over-extension when weight-bearing

20

Insertion of M. flexor digitorum profundus

Tuberculum flexorium of P3 of digits I-V

21

Function of M. flexor digitorum profundus

Flexion of the digits (all joints) and Carpus

22

Origin of Mm. interossei

Palmar carpal fibrocartilage and proximo-palmar ends of McII-V

23

Insertion of Mm. interossei

Proximo-palmar ends of P1 of digits II-V

24

Function of Mm. interossei

Flexion of the metacarpophalangeal joint