Category: P

An antidote that produces physiological effects opposite to the effects of the poison; e.g., sedatives are given for convulsants and stimulants are given for hypnotics. These should not be given without a physician’s instructions.  

An antibody produced in response to an infectious disease.  

An antibody that reacts with many different antigens.  

The branch of anthropology concerned with physical measurement of human beings (as living subjects or skeletal remains).  

The angle formed by the junction of the rami of the pubic bones.  

The angle formed by the meeting of a line drawn tangent to the maximum curve of the zygomatic arch and a line drawn tangent to the end of the maximum frontal diameter of the skull. If these lines are parallel, the angle is zero; if they diverge, a negative angle is formed. In dentistry, a…

Angiography of the pulmonary vessels (e.g., in the diagnosis of pulmonary embolism).  

Angina pectoris occurring in the days or weeks before a myocardial infarction. The symptoms may be unrecognized by patients without a history of coronary artery disease.  

Local anesthesia used primarily in obstetrics (e.g., to facilitate pelvic surgery or childbirth). The pudendal nerve on each side, near the spinous process of the ischium, is blocked.  

The first stage of general anesthesia, before unconsciousness.