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Step 1
Read up on Latin roots to know that "biceps brachii" is Latin for "two heads of the arm." Be sure to look for facts about how this muscle has two bundles with separate origins but a common insertion point. Note that "biceps" is singular and plural.
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Step 2
Examine the biceps brachii to see that it works across the shoulder, elbow and proximal radioulnar joints to perform the following actions: it supinates the forearm, flexes the forearm at the elbow (when supinated), stabilizes the anterior part of the shoulder and weakly flexes the shoulder (if at all).
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Step 3
Observe how the long head originates on the supraglenoid tubercle and glenohumeral labrum of the scapula and the short head originates on the tip of the coracoid process of the scapula.
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Step 4
Look at the insertion point on the posterior border of the bicipital tuberosity of radius (over the bursa) and the fascia at the bicipital aponeurosis.
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Step 5
Research the nervous system to know that the nerve for the biceps brachii is the musculocutaneous nerve from the lateral cord of the fifth and sixth cervical nerves. Study the circulatory system to know that the blood supply for the biceps brachii is the muscular branches of brachial artery.
