Brachium and Cubital Fossa

What condyle is on the medial side of the front of the humerus? What does it articulate with?

Trochlea; ulna

What condyle is on the lateral side of the front of the humerus? What does it articulate with?

Capitulum; radius

What fossa(s) are on the front of the humerus?

radial and coronoid

What fossa(s) are on the back of the humerus?

olecranon

Is the radius or the ulna shorter?

Radius

Which forearm bone has a true connection to the humerus?

Ulna

Which forearm bone has a true connection of the carpal bones?

Radius

Which forearm bone(s) move in supination and pronation?

radius

What attaches to the radial tuberosity?

biceps brachii tendon

What bones does the distal end of the radius articulate with?

lunate and scaphoid

What is the hook shape on the proximal end of the ulna called? What direction does it open towards?

Olecranon; opens anteriorly

Where does the radius articulate with the ulna?

radial notch of the ulna

What is the point at the distal end of the ulna called? Which side is it on?

styloid process; medial side

What ligaments run medial and lateral on the elbow joint?

ulnar and radial collateral ligament

What ligament stabilizes the head of the radius?

anular ligament

What supplies blood to the elbow?

brachial, deep brachial, ulnar, and radial arteries

Biceps Brachii

N: musculocutaneous nerve

A: flexion and supination of forearm, flexion of GH joint, and stabilizes head of abducted humerus

Coracobrachialis

N: Musculocutaneous

A: flexes GH joint

Brachialis

N: Musculocutaneous

A: Flexes elbow

Triceps Brachii

N: Radial nerve

A: extends forearm, extends GH joint, and stabilizes head of abducted humerus

Where is it called the brachial artery?

from the inferior border of teres major to the neck of the radius

Branches of the brachial artery

-deep brachial (splits into radial and middle collateral)

-superior ulnar collateral

-inferior ulnar collateral

First two split off really high (just after teres major) and third splits off just above the elbow

What nerve pierces the coracobrachilais and travels deep to the bicep brachii?

musculocutaneous nerve

What does the musculocutaneous nerve do in the forearm?

Sensory for the lateral surface of the forearm

What nerve travels with brachial artery in the upper arm and emerges medial to the brachial artery in the cubital fossa?

median

What nerve passes through the triangular interval and travels down the groove between the lateral and medial heads of triceps?

Radial

What nerve travels with the brachial artery in the upper arm and enters the forearm by traveling posterior to the medial epicondyle of the humerus?

ulnar nerve

Boundaries of the cubital fossa?

base: imaginary line between the epicondyles

Lateral: brachioradialis

Medial: pronator teres

Roof: bicepital aponeurosis

Floor: brachialis

Contents of cubital fossa from lateral to medial

tendon of biceps brachii, brachial artery, and median nerve