Category: P

Lateral spaces in the dura mater adjacent to the superior sagittal sinus that receive meningeal and diploic veins.  

The midpalmar and thenar spaces of the hand.  

A sound perceived when the auditory canals are closed. The sound is produced by the blood flowing through adjacent vessels.  

The loud blowing murmur heard along the side of the uterus, caused by blood entering the dilated arteries of the uterus in the last months of pregnancy and synchronous with the maternal pulse. A sound believed to originate from blood vessels within the placenta.  

A term sometimes used as a synonym for rapid eye movement (REM) sleep. REM sleep is the preferred term.  

Skin changes caused by chronic sun exposure. This condition is prevented by avoiding suntanning and sunburning and has been treated with topical tretinoin and chemical peels.  

The tissue of origin of a metastatic tumor.  

The location on the skin where a laparoscope or other device (e.g., subcutaneously implanted medicine reservoir) is inserted into the body .  

One of the spaces in the pleural sac along the lower and inferior portions of the lung that the lung does not occupy.  

Abdominal pain produced by extension of the hip. The sign indicates a retrocecal or retroperitoneal lesion.