Tricuspid


Having three flaps or cusps. For example, the aortic valve and the tricuspid valve in the heart each have three cusps.

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  • Tricuspid valve

    One of the four heart valves, the first one that blood encounters as it enters the heart. The tricuspid valve stands between the right atrium and the right ventricle, and it allows blood to flow only from the atrium into the ventricle.

  • Trigeminal nerve

    The chief nerve of sensation for the face, which is also the motor nerve that controls the muscles used for chewing. Problems with the sensory part of the trigeminal nerve result in pain or loss of sensation in the face. Problems with the motor root of the trigeminal nerve result in deviation of the jaw […]

  • Tricyclic antidepressants

    One of a class of medications used to treat depression. The tricyclic antidepressants (TCAs) are also used for some forms of anxiety, fibromyalgia, and the control of chronic pain. “Tricyclic” refers to the presence of three rings in the chemical structure of these drugs.

  • Trigger

    Something that either sets off a disease in people who are genetically predisposed to developing the disease, or that causes a certain symptom to occur in a person who has a disease. For example, sunlight can trigger rashes in people with lupus.A predisposing event.

  • Triglyceride test

    A simple blood test to measure the level of triglycerides in the blood. Triglycerides are the major form of fat stored by the body. Elevated triglyceride levels are considered to be a risk factor for atherosclerosis (hardening of the arteries) and coronary heart disease, because many of the triglyceride-containing lipoproteins that transport fat in the […]


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