Category: I

The pressure within the ventricles of the heart during different phases of diastole and systole.  

Pressure within the abdominal cavity, such as that caused by descent of the diaphragm. Intra-abdominal pressure refers to the pressure within the abdominal cavity. This pressure increases during activities such as coughing, crying, and the exertion of pressure while straining during a bowel movement.  

The pressure in the lungs during the inhalation of a breath.  

Pregnancy that occurs within the broad ligament.  

Rare condition in which the zygote implants in the portion of the fallopian tube that traverses the wall of the uterus.  

The opening of the midgut or yolk sac into the foregut or hindgut of an embryo.  

Polysaccharides in bacteria, especially in the cell wall, that are antigenic.  

A poliovirus vaccine recommended for the prevention of paralytic poliomyelitis. The vaccine, which contains inactivated types I, II, and III polioviruses, is suitable for parenteral administration to all infants and children.  

Acute poisoning usually caused by the accidental ingestion (usually by infants or small children) of iron-containing medications intended for use by adults. In the U.S., about 20,000 accidental iron exposures are reported each year. A potentially life-threatening ailment arises from the consumption of excessive quantities of iron supplements, commonly encountered when ingesting iron formulations intended…

The pH at which a solution of ionized material has as many negative as positive ions.