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.
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.