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.
The muscles that provide the movement for the shoulder and upper arm include the anterior muscles in the front, the posterior muscles in the back, and the shoulder muscles that are sort of in between. Pectoralis major: This muscle has two heads, or sections of muscle tissue, and covers much of the front of the thoracic cage.
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.