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.
Bones of the Human Arm The arm reaches from the shoulder to the wrist. It consists of two basic parts: (1) the upper arm, which extends between the shoulder and the elbow, and (2) the forearm, which extends between the elbow and the wrist. The upper arm is formed by one long bone, the humerus.keletal Muscles of the Human Arm Skeletal muscles are responsible for hundreds of movements. When an organism wants to move, signals travel from the brain to the skeletal muscle cells. The muscle cells then contract, or get shorter. Strands of tough connective tissue connect the skeletal muscles to bones.