medial is the ulnar side and lateral is the radius side
Capitulum
articulates with the depression of the head of the radius to allow for flexion and extension; rotational movement of the forearm
Proximal radioulnar joint
allows for the pronation and supination of the forearm
what are the three muscles in the anterior compartment in the arm?
Coracobrachialis
brachialis
biceps brachii
Biceps brachi
composed of Short (medial )
long head(lateral)
- the tendon of the long head goes through the sulcus of the humerus to the transvers humeral ligament, passes through the glenohumeral joint and attahches at the suprglenoid tubercle
Coracobrachialis
Innervation: musculocutaneous nerve
artery:Brachial artery or anterior circumflex humeral artery
movement: adducts and flexes the humerus
Biceps brachii
innerv: musculocutaneous nerves
artery:Brachial artery and anterior circumflex humeral artery
movement: supinates and flexes the forearm
Brachialis
innervation: musculocutaneous nerve
artery: brachial artery or anterior circumflex humeral artery
movement: flexes the forearm
Quick review of Posterior compartment of the arm
only contains the triceps brachii
it extends the forear
innervation: radial nerve
artery: posteriorcircumflex humeral artery
Bicipital aponeurosis
an extension of the biceps tendon
attached to the antebrachial fascia
seperates the medial cubital vein from the brachial artery and median nerve
This shy it is a safe place for venipuncture
Median nerve
course to the biceps brachii muscle within the medial intermuscular septum
arises from the brachial plexus
Ulnar nerve
courses in the medial intermuscular septum in the proximal arm
the funny bone
Brachial artery
it is a continuation of the axillary artery
it branches into the ulnary artery and radial artery
what are the branches of the brachial artery
there are 3
deep artery of the arm
superior ulnar collateral
interior ulnar collateral
How does the basilic vein change when the deep veins of the arm drain into it
it changes to the axillary vein
cubital fossa
bounded to
brachiradialis muschle (laterally )
& pronator tere muscles ( medially)
superficial boundary ot roof of cubital foassa is the antebrachial fossa
deep boundary ( floor of the cubital fossa) is the brachialis and supinator muscles
From lateral to medial what are the structures in the cubital fossa