Figures & Illustrations
Glossary of Physiology Terms – D
The enzyme found in target tissues of the thyroid hormones that converts thyroxine (also known as tetraiodothyronine or T
) to triiodothyronine (T
Specifically, 5'-deiodinase converts T
to the active form of the thyroid hormone, T
5-Deiodinase converts T
to the inactive form of the thyroid hormone, reverse T
The first region (i.e., most proximal region) of the small intestine.
leaving the stomach (through the pyloric valve) first enters the duodenum. The contents of the duodenum empty into the
(middle region of the small intestine). In adult humans, the duodenum is about 25-38 cm (10-15 inches) long.
Related glossary terms/phrases:
Difficult or painful intercourse.
Posted: Saturday, March 2, 2013
Last updated: Saturday, January 10, 2015