B12 Anatomy Flashcards
Where does the long head of the biceps brachii muscle originate?
Supraglenoid tubercle of scapula
Where does the long head of the biceps brachii muscle insert?
Radial tuberosity
Where does the short head of the biceps brachii muscle originate?
Coracoid process of scapula
Where does the short head of the biceps brachii muscle insert?
Radial tuberosity
Where does the coracobrachialis originate?
Coracoid process of scapula
Where does the coracobrachialis insert?
Medial side of humeral shaft (deltoid tuberosity)
Where does the brachialis muscle originate?
Medial and lateral surfaces of humeral shaft
Where does the brachialis muscle insert?
Ulnar tuberosity
What are the heads of the triceps brachii?
Long, lateral, medial
Where does the long head of the triceps brachii originate?
Infraglenoid tubercle
Where does the lateral head of the triceps brachii originate?
Humerus (above radial groove)
Where does the medial head of the triceps brachii originate?
Humerus (below radial groove)
Where does the triceps brachii muscle insert?
Olecranon of ulna
What is the biceps brachii muscle innervated by?
Musculocutaneous nerve
What is the coracobrachialis muscle innervated by?
Musculocutaneous nerve
What is the brachialis muscle innervated by?
Musculocutaneous nerve with contributions from the radial
What is the triceps innervated by?
Radial nerve
What muscle is responsible for supination of the arm?
Biceps brachii
What is the function of the coracobrachialis muscle?
Flexion at shoulder
Weak adduction
What muscle is responsible for flexion at the elbow?
Brachialis
What muscle is responsible for extension at the elbow?
Triceps brachii
What are ulnar recurrent arteries?
The ulnar collateral arteries once they pass the humerus
What are the ulnar collateral arteries?
Elbow arterial supply coming off the brachial artery
What artery supplies the deep structures on the posterior aspect of the arm?
Deep brachial artery
