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.
This movement is called âscapular elevation.â It uses the muscles Trapezius and Levator Scapulae. Another way to raise your arm is to lift it completely sideways. This movement is called âabduction.â When you do this you can actually only abduct your arm until it is straight sideways. The muscles used to get here were mostly Deltoid and Supraspinatus. Lastly, you can raise your arm by moving it forward in an action called âflexion.â Like abduction, you can only flex your arm until it is straight forward. The muscles used to get here were mostly Coracobrachialis and Biceps Brachii, although there was probably also a little help from Deltoid, and Pectoralis Major.