Syphilitic
1. Relating to syphilis, caused by it, or suffering from it.
2. A person with syphilis. From the French syphilitique.
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A benign (noncancerous) skin tumor that derives from eccrine cells, specialized cells related to sweat glands. The skin lesions of syringoma usually appear during puberty or adult life, and consist of small bumps 1 to 3 mm in diameter that form under the surface of the skin. The most frequent site is the eyelids and […]
- Syringe
A medical device that is used to inject fluid into, or withdraw fluid from, the body. A medical syringe consists of a needle attached to a hollow cylinder that is fitted with a sliding plunger. The downward movement of the plunger injects fluid; upward movement withdraws fluid. Medical syringes were once made of metal or […]
- System, autonomic nervous
the sympathetic nervous system, which accelerates the heart rate, constricts blood vessels, and raises blood pressure, and the parasympathetic nervous system, which slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles.
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The electrical conduction system that controls the heart rate. This system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to contract and pump blood. Among the major elements in the cardiac conduction system are the sinus node, atrioventricular node, and the autonomic nervous system. The sinus node is […]
- System, cardiovascular
The circulatory system which comprises the heart and blood vessels. The system carries nutrients and oxygen to the tissues of the body and removes carbon dioxide and other wastes from them. The cardiovascular system is a closed tubular system in which the blood is propelled by the heart. The system has two circuits, the pulmonary […]