MSK Session 4- Anterior And Posterior Forearm Flashcards Preview

SOPHIE'S ESA 2 > MSK Session 4- Anterior And Posterior Forearm > Flashcards

Flashcards in MSK Session 4- Anterior And Posterior Forearm Deck (27)
1

Name the four superficial anterior muscles of the forearm. (Lateral to medial)

-pronator teres
-flexor carpi radialis
-palmaris longus
-flexor carpi ulnaris

2

What is the action and innervation of pronator teres?

Action- pronates and flexes the forearm
Innervation- median nerve

3

What is action and innervation of flexor carpi radialis?

Action- flexion and abduction of the wrist
Innervation- median nerve

4

What is the action and innervation of palmaris longus?

Action- flexion of the wrist
Innervation- median nerve

5

What is the action and innervation of flexor carpi ulnaris?

Action- flexion and Adduction of the wrist
Innervation- ulnar nerve

6

What is the intermediate muscle of the anterior forearm?
What is its action and innervation?

Flexor digitorum superficialis
Action- flexion of the medial 4 digits at the proximal interphalangeal joint.
Innervation- median nerve

7

What are the 3 deep muscles of the anterior forearm?

Flexor digitorum profundus
Pronator quadratus
Flexor pollicis longus

8

What is the action and innervation of flexor digitorum profundus?

Action- flexion of the distal interphalangeal joints of the medial 4 digits.
Innervation- medial 1/2- ulnar nerve, rest- anterior interosseous nerve

9

What is the action and innervation of pronator quadratus?

Action- pronation
Innervation- anterior interosseous nerve

10

What is the action and innervation of flexor pollicis longus?

Action- flexion of the thumb
Innervation- anterior interosseous nerve

11

How many muscle layers are there in the posterior forearm?

3

12

What are the 6 superficial posterior forearm muscles? (Lateral to medial)

Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris

13

What is the action and innervation of extensor carpi radialis longus?

Action- extension and abduction of the wrist
Innervation- radial nerve

14

What is the action and innervation of extensor carpi radialis brevis?

Action- extension and abduction of the wrist
Innervation- deep branch of radial nerve

15

What is the action and innervation of the extensor digitorum?

Action- extension of the 4 medial digits at the metacarpophalangeal joints.
Innervation- deep branch of radial nerve

16

What is the action and innervation of extensor digit minimi?

Action- extension of the 5th digit at the metacarpophalangeal joint
Innervation- deep branch of radial

17

What is the action and innervation of extensor carpi ulnaris?

Action- extension and adduction of the wrist.
Innervation- deep radial

18

What are the two deep muscles of the posterior forearm? What are their actions and innervations?

Supinator
-action - supinates the forearm
-innervation- deep radial nerve
Extensor indicis
-action - extension of the index finger
-innervation- posterior interosseous nerve

19

What are the 3 outcropping muscles of the deep layer of the posterior forearm? (Lateral to medial)

-adductor pollicis longus
-extensor pollicis brevis
-extensor pollicis longus

20

What is the action and innervation of abductor pollicis longus?

Action- abducts and extends thumb at carpometacarpal joint
Innervation- posterior interosseous nerve

21

What is the action and innervation of extensor pollicis brevis?

Action- extends distal phalanx of thumb at interphalangeal joint
Innervation- posterior interosseous nerve

22

What is the action and innervation of extensor pollicis longus?

Action- extends the proximal phalanx of the thumb at the metacarpophalangeal joint.
Innervation- posterior interosseous nerve

23

What is the floor of the anatomical snuffbox? (2)

Scaphoid and trapezium

24

What is the medial border of the anatomical snuffbox?

Extensor pollicis longus

25

What is the lateral border of the anatomical snuffbox? (2)

Abductor pollicis longus and extensor pollicis brevis

26

What runs through the anatomical snuffbox? (2)

Radial artery and nerve

27

How many layers of muscles are there in the anterior forearm?

3

Decks in SOPHIE'S ESA 2 Class (74):