Exam 3 - The Arm & Flexor Forearm Flashcards
Muscles supplied by the musculocutaneous nerve in the arm are also supplied by what artery?
Brachial artery
Which muscle supinates the forearm?
Biceps brachii.
The coracobrachialis is a weak flexor of the humerus, and also ______?
Adducts the humerus
The chief extensor of the forearm is supplied by which nerve?
Triceps brachii is supplied by the radial nerve
The brachial artery, a continuation of the axillary artery at the lower border of the teres major muscle, runs with what nerve?
Median nerve. Note: In the cubital fossa, the brachial artery divides into the radial and ulnar arteries.
The ulnar nerve often causes a pins-and-needles sensation when hit behind the medial epicondyle. What branch of the brachial artery accompanies it here?
Superior ulnar collateral artery
Which branch of the brachial artery runs with the radial nerve in the radial groove?
Deep brachial artery (profunda brachii) - largest branch
The radial nerve divides in front of the lateral epicondyle into superficial and deep branches; what are the functional aspects of both?
Superficial branch - sensory. Deep branch - motor.
What are the contents of the cubital fossa, from medial to lateral?
Median nerve;
Brachial artery and terminal branches;
Biceps tendon;
Radial nerve & terminal branches
The lateral antebrachial cutaneous nerve runs between the ____ muscles to supply the skin of the lateral forearm.
Biceps and brachialis
The lateral boundary of the cubital fossa is _______.
Brachioradialis muscle
The medial border of the cubital fossa is the muscle.
pronator teres
Which muscles of the anterior compartment are supplied by the ulnar nerve?
Flexor Capri ulnaris;
Flexor digitorum profundus (medial half)
Which fascial membrane is an attachment site for many muscles, but also transmits force from radius to ulna to humerus to scapula?
Interosseus membrane between radius and ulna
The flexor compartment of the forearm is supplied by what two arteries?
Radial and ulnar
