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Flashcards in Muscles of the Anterior Forearm Deck (62)
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1

This part of the forearm serves as an attachment site for many muscles

Interosseous membrane

2

The anterior compartment of the forearm performs what actions?

Flexion
Pronation

3

Nerves that innervate the anterior compartment of the forearm

Median and Ulnar Nerve

4

The posterior compartment of the forearm performs what actions?

Extension and supination

5

All of the muscles of the posterior compartment are innervated by

The Radial Nerve

6

Because many of the muscles of the forearm originate from the humerus, which causes the muscles in to be located where in the forearm?

What does this accomplish?

The muscles are located proximally. This allows the wrist and hand to be less bulky.

7

The 5 superficial muscles of the anterior forearm are...

1. Pronator Teres
2. Flexor Carpi Radialis
3. Palmaris Longus
4. Flexor Carpi Ulnaris
5. Flexor Digitorum Superficialis

8

All of the muscles of the anterior compartment of the forearm attach to the common flexor tendon which originates off of....

the medial epicondyle of the humerus

9

Most of the muscles of the forearm are innervated by

The median nerve

10

Round, tubular shaped muscle that extends from common flexor to halfway down the radius

Pronator Teres

11

Origin of the pronator teres

Medial epicondyle of the humerus and somewhat off the coronoid process of the ulna

12

What passes through the small opening on the pronator teres where the muscle originates?

Median nerve

13

Where does pronator teres insert?

Radius, lateral side midway down

14

What nerve innervates the pronator teres

Median nerve

15

What action is the pronator teres responsible for?

What other action can it assist with?

Pronation

Flexion at the elbow

16

Anterior muscle of the forearm that acts with the flexor carpi ulnaris to help flex the wrist

It cannot also help flex the elbow

Flexor Carpi Radialis

17

When acting alone or with extensors, what movement does the flexor carpi radialis perform?

Abducts the wrist

18

What structure is located laterally to the flexor carpi radialis?

Radial Artery

19

Where does the flexor carpi radialis insert?

The base of the 2nd and 3rd metacarpals

20

What is the sheet that carpi muscles must pass through when crossing wrist?

Flexor Retinaculum

21

What innervates the flexor carpi radialis?

Median nerve

22

This muscle lies superficial to flexor digitorrum and is fairly small, has little affect on wrist strength

Palmaris Longus (Absent in 15% of ppl)

23

What is the insertion of the palmaris longus?

Origin?

Palmar Aponeurosis

Medial epicondyle of the humerus

24

Fascia covering the palm of the hand

Palmar Aponeurosis

25

Action of the palmaris longus

Flex the wrist

26

What lies just lateral to the palmaris longus, between the palmaris longus and flexor carpi radialis?

The median nerve

27

The most medial muscle of the superficial flexors

Flexor Carpi Ulnaris

28

What action does the flexor carpi ulnaris have when working with other flexors?

What about when it acts with extensors?

Has some ability to do this because it crosses the elbow joint

Flexion

Adduct the wrist

Flex the elbow

29

What innervates the flexor carpi ulnaris?

Ulnar nerve

30

What two structures lie just laterally to flexor carpi ulnaris tendon?

Ulnar nerve and artery