Forearm

Question 0

Flexors and pronators

Answer 0

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

Question 1

Radius and ulna are joined by

Answer 1

An interosseous membrane

Question 2

Extensors and supinators

Answer 2

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

Question 3

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

Answer 3

Palmar carpal ligament and the flexor retinaculum

Question 4

Superficial layer of the flexor-pronator muscles

List, and what is their common proximal attachment?

Answer 4

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

Question 5

Major branch of the median nerve of the forearm?

Answer 5

Anterior interosseous nerve

Question 6

The brachial artery ends at … And divides into…

Answer 6

Ends at distal part of cubital fossa

Divides into ulnar and radial arteries

Question 7

Ulnar artery descends through …

Answer 7

The anterior (flexor-pronator) compartment of the forearm

Question 8

The radial artery leaves the forearm …

Answer 8

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

Question 9

The anatomical snuff box boundaries

Answer 9

Tendons of APL and EPB laterally

Tendon of EPL medially

Question 10

Anatomical snuff box floor

Answer 10

Radial artery

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

Question 11

Medial epicondyle of humerus for…

Answer 11

Flexors and ulnar nerve

Question 12

Radiohumeral and ulnohumeral joints are…

Answer 12

Are uniaxial joints

Question 13

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

Answer 13

Uniaxial pivot joint which allows pronation and supination

Question 14

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

Answer 14

Surrounds all three articulations and is weak anteriorly and posteriorly

Question 15

Radial collateral ligament

Answer 15

Lateral epicondyle and blends into annular ligament

Question 16

Ulnar collateral ligament

Answer 16

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

Question 17

Annular ligament

Answer 17

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

Question 18

Oblique cord

Answer 18

Hold the radius and ulna together

Question 19

Interosseous membrane

Answer 19

Prevents proximal displacement of radius on ulna

Question 20

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

Answer 20

Median cubital vein and median&lateral cutaneous nerves

Question 21

Osteofacial compartments

Answer 21

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

Question 22

Ulnar nerve runs…

Answer 22

Deep to the medial epicondyle… Superficial