The degree of elasticity of skin, sometimes referred to as skin turgor. The assessment of skin turgor is used clinically to determine the extent of dehydration, or fluid loss, in the body. The measurement is done by pinching up a portion of skin (often on the back of the hand) between two fingers so that it is raised for a few seconds. The skin is then released to observe how fast it returns to its normal (flat) position. If no dehydration is present, the skin returns quickly to the normal position. With moderate to severe dehydration, decreased skin turgor causes the pinched-up skin to remain elevated and only slowly return to its flat position.
A spice with anti-inflammatory effects. The active ingredient is curcumin, which has antioxidant and anti-inflammatory properties. Turmeric is a common ingredient in curry powder. Alternate spellings tumeric.
- Turner syndrome
The most common sex chromosome disorder in females, characterized by short stature, webbed neck, broad shield-like chest, wide-spaced nipples, increased carrying angle at the elbow (cubitus valgus), short fourth finger, and malformations of the heart and aorta. The intelligence of those with Turner syndrome is usually within the normal range. Girls with Turner syndrome at […]
- Twelfth cranial nerve
The hypoglossal nerve. The twelve cranial nerves, including the hypoglossal nerve, emerge from or enter the skull (the cranium). The hypoglossal nerve supplies the muscles of the tongue. Paralysis of the hypoglossal nerve affects the tongue. It impairs speech (it sounds thick) and causes the tongue to deviate toward the paralyzed side. In time, the […]
Typically considered normal vision. The ability to identify a symbol that subtends an angle of 5 minutes of arc, and score 20/20 on the standard Snellen eye chart named after its inventor. It is usually read while standing a distance of 20 feet from it. Visual acuity is traditionally represented as a fraction, with the […]
- Twilight sleep
Scopolamine was introduced in 1902. The name comes from the 18th-century Italian naturalist Giovanni Scopoli. Scopolamine is, together with atropine, a component of belladonna which comes from a plant called “deadly nightshade,” once used as a means of poisoning. When scopolamine is given in lower (non-poisonous) doses, it causes drowsiness and amnesia. Scopolamine + morphine […]