How many points of origin does the triceps brachii have?
A) one
B) two
C) three
D) four
C
Explanation:
A) As the name implies, the triceps brachii has its origins on three heads. The long head originates on the lateral border of the scapula. The lateralhead originates on the deltoid ridge of the humerus. The small medial originates on the shaft of the humerus. All three heads have a single insertion on the olecranon process of the ulna.
B) As the name implies, the triceps brachii has its origins on three heads. The long head originates on the lateral border of the scapula. The lateral head originates on the deltoid ridge of the humerus. The small medial originates on the shaft of the humerus. All three heads have a single insertion on the olecranon process of the ulna.
D) As the name implies, the triceps brachii has its origins on three heads. The long head originates on the lateral border of the scapula. The lateral head originates on the deltoid ridge of the humerus. The small medial originates on the shaft of the humerus. All three heads have a single insertion on the olecranon process of the ulna.
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