Gross Anatomy L13

what makes up the elbow joint

joint capsule, radial collateral ligament, ulnar collateral ligament, annular ligament

compartments of the arm

anterior (flexor), posterior (extensor)

what separates the compartments of the arm

the humerus and medial and lateral intermuscular septa all surrounded by the brachial fascia

what muscles are in the anterior compartment of the arm

biceps brachii, brachialis, coracobrachialis

what innervates the anterior compartment of the arm

musculocutaneous nerve

what muscle is in the posterior compartment of the arm

triceps brachii

what innervates the posterior compartment of the arm

radial nerve

musculocutaneous nerve comes from what spinal vertebrae

C5, C6, C7

radial nerve comes from what spinal vertebrae

C5, C6, C7, C8, T1

median nerve comes from what spinal vertebrae

C5, C6, C7, C8, T1

ulnar nerve comes from what spinal vertebrae

C8, T1

axillary nerve comes from what spinal vertebrae

C5, C6

coracobrachialis actions

flexion and adduction of arm

coracobrachialis origin

coracoid process of scapula

coracobrachialis innervation

musculocutaneous nerve

coracobrachialis blood supply

brachial artery

biceps brachii action

flexion and supination of forearm, flexion of arm

biceps brachii origin

coracoid process of scapula, supraglenoid tubercle

biceps brachii innervation

musculocutaneous nerve

biceps brachii blood supply

brachial artery

brachialis action

flexion of forearm

brachialis origin

anterior humerus

brachialis innervation

musculocutaneous nerve

brachialis blood supply

brachial artery

triceps brachii action

extension of forearm, extends and adducts arm

triceps brachii origin

infraglenoid tubercle, posterior humerus, medial humerus

triceps brachii insertion

olecranon process

triceps brachii innervation

radial nerve

triceps brachii blood supply

deep brachial artery

arteries of arm

axillary artery, brachial artery, deep brachial, collateral arteries, radial artery, ulnar artery

veins of the arm

axillary vein, brachial vein, basilic vein, cephalic vein, median cubital

where does radial nerve travel

travels with deep brachial artery in the radial groove

where does median nerve travel

with brachial artery through cubital fossa

where does ulnar nerve travel

posterior to medial epicondyle

what are the superior boundaries of the cubital fossa

medial and lateral epicondyles

what is the medial boundary of the cubital fossa

pronator teres

what is the lateral boundary of the cubital fossa

brachioradialis

what is the floor of the cubital fossa

brachialis and supinator

what is the roof of the cubital fossa

brachial and antebrachial fascia