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   At or toward the back.


Thin metal rod inserted into the root of a tooth after root canal therapy; provides retention for a "coping" that replaces lost tooth structure and retains crown.

Post stimulus time histogram
A method for examining cell response to a particular stimulus. The time after stimulus onset is divided into a number of bins. The stimulus is then presented repeatedly and the count in each bin increased each time the cell fires during that time bin.

Post and buildup to replace lost tooth structure and retain crown.

Single structure that combines post-core and crown.

Post-traumatic stress disorder (PTSD)
A syndrome caused by re-experiencing traumatic events while being unaware of or unresponsive to current events or, in other words, a "flashback." A child may experience sleeping problems, nightmares, intrusive thoughts, have difficulty concentrating, self-destructive behavior, hyperactivity or anxiety/panic disorder. Therapy is crucial in managing PTSD.

Postcholecystectomy syndrome
A condition that occurs after gallbladder removal. The muscle between the gallbladder and the small intestine does not work properly, causing pain, nausea, and indigestion. Also called biliary dyskinesia.

Posterior parietal cortex
Concerned with the perception of the spatial relations among objects.

Postgastrectomy syndrome
A condition that occurs after an operation to remove the stomach (gastrectomy). See also dumping syndrome.

Postmarketing surveillance
ongoing safety monitoring of marketed drugs. See Phase 4 studies, Phase 5 studies.

An infant born at 42 weeks or more is considered postmature. As withprematurity, being postmature can lead to complications; the baby may belarger and less able to pass through the birth canal or the placenta may nolonger be able to provide adequate oxygen or nutrition.

Postnatal care
Medical care for both newborn and mother during the first 6 weeks after birth.

Postnatal Depression
Depression in women occurring usually within four weeks after the delivery of a child. The degree of depression ranges from mild transient depression to neurotic or psychotic depressive disorders.

After surgery.

After childbirth.

Postpartum depression
More severe than the more common and milder baby blues, postpartumdepression is characterized by sadness, impatience, restlessness, and inability to care for the baby.

Occurring after a meal. Example: Blood taken 1-2 hours after eating to see the amount of glucose in the blood would be called a postprandial blood glucose test.

Postural Orthostatic Tachycardia Syndrome (POTS) (Neurocardiogenic Syncope, Dysautonomia)
Dysfunction of the autonomic nervous syndrome. Causes symptoms of fatigue, dizziness, increased heart rate, and other symptoms. See syncope.

Postural tremor
A tremor of a limb that increases when the limb is stretched.

A force platform that evaluates somatosensory and visual influences on posture and equilibrium.

Postvagotomy stasis
Delayed stomach emptying; occurs after surgery on the vagus nerve.


Surgical removal of a polyp.

Excessive, frequent urination.

A piece of connecting tissue, specifically the bridge of white matter at the base of the brain.

Having to do with the area behind the knee.

A small opening.


After surgery.

After childbirth.

Premenstrual syndrome
PMS. Headache, irritability, edema (swelling), abdominal discomfort, pelvic pain and nausea in the days before the start of the menstrual periods of some women.

Hearing loss due to old age.


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