Arm and Elbow Flashcards
Ulnar Nerve
What nerve is derived from the medial cord and continues through arm region passing posteriorly to the medial epicondyle?
Medial and Lateral Intermuscular Septa
What structure separates the upper arm into two compartments, an anterior flexor compartment and a posterior extensor compartment?
Triceps Brachii Long, Lateral and Medial heads
What muscle makes up the upper arm posterior extensor compartment? It is composed of three heads, long, lateral, and medial. The long head takes origin from the infraglenoid tubercle (meidal to thh laterlal head). The lateral head takes origin form the posterior surface of the humerous. The medial head is deep to the long and lateral and sits just medial to the radial groove.
Radial Nerve
What nerve passes from the posterior compartment of the arm through the lateral septum to lie benieth the brachioradialis muscle? It originates from the posterior cord of the brachial plexus. It accompanies the deep brachial artery in the radial groove.
Deep Brachial Artery
What is the first branch off of the brachial artery (a continuation of the axllary artery) that runs posteriorly and accompanies the radial nerve in the radial groove?
Bicepts Brachii muscle Long and short head
What muscle takes origin from the supraglenoid tubercle? It lies laterally on the anterior upper arm.
What muscle takes origin from the coracoid process of the scapula?
The two muscle bellies join and form a tendon that inserts on the radial tuberosity
Musculocutaneous Nerve
What nerve innervates the biceps muscle as well as the coracobrachialis muscle (which lies deep to the short head of the biceps).
Coracobrachialis Muscle
What muscle attaches superiorly to the coracoid process and inferiorly on the humerus at its midpoint on the medial side. The musculocutaneous nerve innervates the muscle and usually passes through the muscle before coming to lie between the biceps and brachialis muscles that it also innervates
Brachialis Muscle
What muscle takes origin from the anterior lower one-half of the humerus and attaches distally to the coronoid process and tuberosity of the ulna. Like the other muscles in the anterior or flexor compartment, it is innervated by the musculocutaneous nerve
Brachioradialis Muscle
Lateral Cutaneous Nerve of forearm (ante brachial)
What nerve is a continuation of the musculocutaneous nerve after the musculocutaneous exits from teh lateral border of the biceps on its way to the forearm?
Brachial Artery
What artery begins at the lateral border of the teres major muscle and is a continuation of the axillary artery. It accompanies the median nerve.
Superior Ulnar Collateral Artery
What artery is the second branch off of the brachial artery? It accompanies the ulnar nerve and passes behind the medial epicondyle
Inferior Ulnar Collateral Artery
What artery is the third and smallest branch off of the brachial artery? It supplies the area of the elbow joint and anastomoses with recurrent branches of the ulnar and radial arteries
Median Nerve
What nerve accompanies the brachial artery through the upper arm? It has no innervation in the upper arm.
Bicipital Aponeurosis
What structure is formed by the biceps muscle and is a dense band of connective tissue running superficial on the medial anterior forearm?
Radial and Ulnar Arteries
What two arteries branch off of the brachial artery as it enters the forearm in teh area of the cubital fossa?
Radial Nerve Superficial and Deep branches
After the radial nerve has pierced the lateral intermuscular septum, it lies beneath the brachioradialis muscle. It then divides into two branches, one that is entirely sensory and lies beneath the brachioradialis muscle to pass distally to reach the dorsum of the hand, and the other branch that pierces the supinator muscle to reach the posterior forearm compartment containing the extensor muscles. What are these branches called?
Transverse Humeral Ligament
Subacromial/Subdeltoid Bursa
Greater Tubercle
Lesser Tubercle
Intertubercular Sulcus
What nerve is derived from the medial cord and continues through arm region passing posteriorly to the medial epicondyle?
Ulnar Nerve
What structure separates the upper arm into two compartments, an anterior flexor compartment and a posterior extensor compartment?
Medial and Lateral Intermuscular Septa
What muscle makes up the upper arm posterior extensor compartment? It is composed of three heads, long, lateral, and medial. The long head takes origin from the infraglenoid tubercle (meidal to thh laterlal head). The lateral head takes origin form the posterior surface of the humerous. The medial head is deep to the long and lateral and sits just medial to the radial groove.
Triceps Brachii Long, Lateral and Medial heads
What nerve passes from the posterior compartment of the arm through the lateral septum to lie benieth the brachioradialis muscle? It originates from the posterior cord of the brachial plexus. It accompanies the deep brachial artery in the radial groove.
Radial Nerve
What is the first branch off of the brachial artery (a continuation of the axllary artery) that runs posteriorly and accompanies the radial nerve in the radial groove?
Deep Brachial Artery
