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.
Arm Abduction. Abduction of the arm is also called abduction of/at the shoulder. This motion actually can be divided into two motions: true abduction of the arm at the shoulder and upward rotation of the scapula. Muscles: supraspinatus (initiates abduction - first 15 degrees), deltoid (up to 90 degrees), trapezius and serratus anterior (scapular rotation, for abduction beyond 90 degrees).
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.