Possible points for measuring the heart rate are: 1  The ventral aspect of the wrist on the side of the thumb (radial artery). 2  The ulnar artery. 3  The neck (carotid artery). 4  The inside of the elbow, or under the biceps muscle (brachial artery). 5  The groin (femoral artery). 6  Behind the medial malleolus on the feet (posterior tibial artery).
HIV is a member of the genus Lentivirus, part of the family Retroviridae. Lentiviruses have many morphologies and biological properties in common. Many species are infected by lentiviruses, which are characteristically responsible for long-duration illnesses with a long incubation period.
The pinworm (genus Enterobius) is a type of roundworm, and three species of pinworm have been identified with certainty. Humans are hosts only to Enterobius vermicularis (formerly Oxyuris vermicularis). Chimpanzees are host to Enterobius anthropopitheci, which is morphologically distinguishable from the human pinworm. Hugot (1983) claims there is another species affecting humans, Enterobius gregorii, which is supposedly a sister species of E. vermicularis, and has a slightly smaller spicule (i.e., sexual organ).