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.
Additionally, adductor muscles aid with the movements of the joint of the hips. This muscle group is especially important to athletes, such as soccer players, football players, sprinters and swimmers. When these muscles are stretched too far, an injury called groin pull may occur.