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).
Below the infraspinatus is the teres minor, and below the teres minor is the teres major. Both the teres minor and teres major commence on the shoulder blade and stretch out to the upper arm bone. Together these three muscles assist the latissimus dorsi in shoulders adduction during the pull up. This is the action that moves your upper arm bone into your body, lifting your body up to the bar.