Exam 2 - Lecture 10 - Brachium, Cubital Fossa Flashcards
What are connective tissue membranes that divide a limb into two or more compartments?
Septa (i.e. septum singular)
What septum of the arm goes from the subcutaneous sheath to the humerus?
Medial intermuscular septum
What septum of the arm goes from the subcutaneous sheath to the humerus?
Lateral intermuscular septum
Identify the muscles labeled in the diagram
Green:Bicep brachii; Blue:Coracobrachialis; Red:Brachialis
What is the function of the biceps brachii, coracobrachialis, and brachialis?
Forearm flexors
What nerve innervates the anterior brachial compartment (i.e. biceps brachii, coracobrachialis, and brachialis)?
Musculocutaneous nerve
Identify the nerve.
Musculocutaneous nerve
What is the proximal attachment of the short head of the biceps brachii?
Coracoid process
What is the proximal attachment of the long head of the biceps brachii?
Supraglenoid tubercle of scapula
What is the distal attachment of the biceps brachii?
Tuberosity of radius
What is the action of the biceps brachii?
Flexion and supination of forearm as well as forearm flexion
What is the proximal attachment of the coracobrachialis?
Coracoid
What is the distal attachment of the coracobrachialis?
Middle third of medial border of humerus
What is the action of the coracobrachialis?
Weakly flexes and adducts arm
What is the proximal attachment of the brachialis?
Distal half of anterior surface of humerus and intermuscular septum
What is the distal attachment of the brachialis?
Tuberosity of coronoid process
What is the action of the brachialis?
Main flexor of forearm
