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.
The action occurs as you then move your arms out to the side. Latissimus dorsi and posterior fibers of deltoid. Horizontal adduction. For the start position, lift your arms out to the side. The actions occurs as you then move your arms in front of you. Pectoralis major and anterior fibers of deltoid. Elbow and Wrist Joints. The elbow joint consists of the humerus bone and the radius and ulna bones.