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).
The intrinsic muscles of the hand are divided into three groups: (1) those of the thumb, the thenar eminence. (2) those of the little finger, the hypothenar eminence. (3) and those in the middle of the palm and between the metacarpal bones. The muscles of the thenar eminence are: adductor policis (transverse) adductor policis (oblique) flexor pollicis brevis abductor policis brevis opponens pollicis. The forearm (extrinsic hand muscles) that control the thumb are: abductor pollicis longus extensor pollicis brevis. extensor pollicis longus.