Arm Flashcards
Which muscles are innervated by the musculocutaneous nerve? (all)
BBC-
Biceps brachii, brachialis, coracobrachialis
Which muscles facilitate the flexion of the elbow joint?
Brachialis, Brachioradialis, Biceps brachii, Pronator teres
Which muscles facilitate the extension of the elbow joint?
Triceps brachi, Anconeus
Which muscles facilitate supination of forearm?
Supinator, Biceps brachii
Which muscles facilitate the pronation of the forearm?
Pronator Teres, Pronator quadratus
How many heads does the biceps brachii have? Where do they originate?
Two- short (more medial) and long (more lateral). Short originates coracoid process, long originates supraglenoid tubercle.
How many heads does the triceps brachii have? Where do they originate?
Three- medial, lateral, long. Medial: posterior surface of the humerus. Lateral: posterior surface of humerus superior to radial groove. Long: infraglenoid tubercle of scapula.
Which muscles are innervated by the radial nerve?
Brachioradialis, triceps brachii, anconeus, supinator (deep branch)
What nerve innervates triceps brachii?
Radial nerve
What nerve innervates anconeus?
Radial nerve
What nerve innervates brachioradialis?
Radial nerve
Where does the brachialis orginate and insert?
Origin: distal anterior surface of humerus. Inserts: coronoid process of ulna.
Where does the brachioradialis originate and insert?
Origin: lateral supracondylar ridge of humerus. Inserts: lateral styloid process of radius
Where does the biceps brachii insert?
Radial tuberosity
Which muscle is the main flexor Of the elbow joint?
Brachialis
