Category: U

Explanations of behavior that focus on why a particular behavior increased reproductive success during the process of evolution. The remote event or condition that initiated a train of events resulting in the development of a disease or condition.  

The major artery of the forearm, on the side opposite the thumb. An artery which branches from the brachial artery at the elbow and runs down the inside of the forearm to join the radial artery in the palm of the hand. Large artery that branches from the brachial artery and supplies muscles of the…

The larger of the two bones of the forearm on the little finger side of the arm. The longer and inner of the two bones in the forearm between the elbow and the wrist. Larger of the two lower arm bones (the other being the radius) extending from the elbow, where it articulates with the…

Ultraviolet radiation from the sun; harmful to skin and eyes.  

A tube that connects the urethra to the bladder; where urinary tract infections start and gain traction to become bladder infections.  

International treaty to prohibit production and supply of nominally narcotic drugs and drugs with similar effects, regarded as a milestone in the history of international drug control.  

Describes petals fused together.  

Relates to plants living only in the lowlands of the innermost tropics, and requiring constant high temperatures.