Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «T»:
Thoracic: Pertaining to the chest....
Thoracic aneurysm: A local
widening and bulging of a vessel (an aneurysm) within the
thorax (chest). See: Aortic aneurysm. An aneurysm is a
localized widening (dilatation) of an artery, vein, or the
heart. At the area of an aneurysm, there is typically a
bulge and the wall is weakened and ma...
Thoracic aorta: The thoracic aorta is a section of the aorta, the largest artery in the body, within the chest. Specifically, the thoracic aorta is that part of the aorta that starts after the arch of the aorta and runs down to the diaphragm, the great muscle that separates the chest from the abdo...
Thoracic cage: The structure formed by the thoracic vertebrae and ribs, the sternum (breastbone), and the costal cartilages (that attach the ribs to the sternum).
A cage is an enclosure made of "open work" that usually houses animals. The thoracic cage was thought to resemble an animal cage (althoug...
Thoracic duct: A vascular structure which recirculates lymph into
the blood stream. It begins in the abdomen and tracks alongside the aorta and esophagus to
eventually join with the left brachiocephalic vein. ...
Thoracic outlet syndrome
Thoracic outlet syndrome: A condition due to compromise of blood vessels or nerve
fibers between the armpit (axilla) and base of the neck, usually due
to compression of nerves or blood vessels between the neck and
shoulders. Symptoms include pain, arm weakness, and numbness in the
hands and fing...
Thoracic vertebrae: The 12 thoracic vertebrae are situated between the cervical (neck) vertebrae and the lumbar vertebrae. The thoracic vertebrae are represented by the symbols T1 through T12.
The thoracic vertebrae provide attachment for the ribs and make up part of the back of the thorax (the ches...
Thoracolumbosacral orthosis (TLSO)
(TLSO): One of the two main types of braces used to correct the lateral
(sideways) curve of the spine in scoliosis. Patients can wear this brace to correct spinal curves whose apex is at or below the eighth thoracic vertebra. The
TLSO is an underarm brace, which means ...
Thoracotomy: An operation to open the chest....
Thorax: The area of the body located between the
neck and the abdomen that contains the lungs, the heart and part of the aorta. The walls of the thorax are supported by the dorsal vertebrae, the ribs, and the sternum. The plural of thorax is thoraxes or thoraces. The thorax is also called the chest...
Thoraxes: Plural of thorax....
Thorn test: An early test for Addison's disease. The test is named for Dr. George W. Thorn who devised it. See: Thorn, George W.....
Thorn, George W.
Thorn, George W.: American endocrinologist (1906-2004) who was a pioneer in the use of cortisone for treating Addison's disease; a member of the medical team responsible for the first successful kidney transplant; and editor-in-chief of Harrison's Principles of Internal Medicine, a key medical text...
Thr: Threonine. See also: Amino acid symbols....
Three day fever
Three day fever: See: Sandfly fever....