Cocaine normally stays in the system for approximately 48 hours. Although the method of administration and the dose administered affects how long it takes for the body to metabolize this drug. When coca leaves are chewed, absorption time is around 30 minutes.
In this article, we shall look at the anatomy of the muscles of the upper arm â their attachments, innervation and actions. There are three muscles located in the anterior compartment of the upper arm â biceps brachii, coracobrachialis and brachialis. They are all innervated by the musculocutaneous nerve. A good memory aid for this is BBC â biceps, brachialis, coracobrachialis.
Anatomy: The muscles on the front of the upper arm comprise three muscles. Two of the muscles bend the elbow joint (M biceps brachii, M brachialis), while the third muscle (M coracobrachialis) brings the arm towards the body (adduction).The biceps muscle also rotates the hand (suppination).Diagnosis:RUPTURE OF MUSCLE ON THE FRONT OF THE UPPER ARM.wo of the muscles bend the elbow joint (M biceps brachii, M brachialis), while the third muscle (M coracobrachialis) brings the arm towards the body (adduction). The biceps muscle also rotates the hand (suppination). Diagnosis: RUPTURE OF MUSCLE ON THE FRONT OF THE UPPER ARM.