Forearm Flashcards Preview

Anatomy > Forearm > Flashcards

Flashcards in Forearm Deck (23)
Loading flashcards...
0

Radius and ulna are joined by

An interosseous membrane

1

Flexors and pronators

Are in the anterior compartment and are served mainly by the medial nerve

2

Extensors and supinators

Are all in the posterior compartment and are all innervated by the radial nerve

3

The tendons of most flexor muscles pass across the anterior surface of the wrist and are held in place by ____ and _____

Palmar carpal ligament and the flexor retinaculum

4

Superficial layer of the flexor-pronator muscles
List, and what is their common proximal attachment?

Pronator teres, flexor carpi radialis, palmaris longus, and flexor carpi ulnaris

All attached proximally by a common flexor tendon to the medial epicondyle of the humerus

5

Major branch of the median nerve of the forearm?

Anterior interosseous nerve

6

The brachial artery ends at ... And divides into...

Ends at distal part of cubital fossa
Divides into ulnar and radial arteries

7

Ulnar artery descends through ...

The anterior (flexor-pronator) compartment of the forearm

8

The radial artery leaves the forearm ...

By winding around the lateral aspect of the wrist and crossing the floor of the anatomical snuff box to reach the hand

9

The anatomical snuff box boundaries

Tendons of APL and EPB laterally
Tendon of EPL medially

10

Anatomical snuff box floor

Radial artery
Scaphoid and trapezium can be felt in the floor, between the radial styloid process and the first metacarpal base

11

Medial epicondyle of humerus for...

Flexors and ulnar nerve

12

Radiohumeral and ulnohumeral joints are...

Are uniaxial joints

13

Proximal radioulnar joint. what kind and what motion does it allow?

Uniaxial pivot joint which allows pronation and supination

14

The joint capsule of elbow joint surrounds ____ and is weak ____

Surrounds all three articulations and is weak anteriorly and posteriorly

15

Radial collateral ligament

Lateral epicondyle and blends into annular ligament

16

Ulnar collateral ligament

Medial epicondyle to coronoid process to olecranon process
3 bands
Anterior- if tight hard to extend
Posterior- if tight hard to flex
Oblique

17

Annular ligament

Encircles the head of the radius in the radial notch and serves as an articular surface

18

Oblique cord

Hold the radius and ulna together

19

Interosseous membrane

Prevents proximal displacement of radius on ulna

20

What are the contents of the subcutaneous tissue overlying cubital fossa?

Median cubital vein and median&lateral cutaneous nerves

21

Osteofacial compartments

Organize the muscles into functional groups
Shared innervation and blood supply
Formed by
-deep fascia surrounding the limb segment
-intermuscular septa projecting deep from facia to bone
-bone
-interosseous membranes where applicable

All 4 provide surface area for muscle attachment

22

Ulnar nerve runs...

Deep to the medial epicondyle... Superficial