Vena cava, superior
A large vein that receives blood from the head, neck, upper extremities, and thorax and empties it into the right atrium of the heart.
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- Venereal
Having to do with sexual contact. For example, a venereal disease is a sexually transmitted disease.
- Venereal Disease Research Laboratory test
A blood test for syphilis. Venereal Disease Research Laboratory is commonly abbreviated VDRL. A negative (“nonreactive”) VDRL is compatible with a person not having syphilis. However, a person may a negative VDRL and still have syphilis since, in the early stages of the disease, the VDRL often gives negative results. This is called a false […]
- Venereal wart
A wart that is confined primarily to the moist skin of the genitals. These warts are due to viruses belonging to the family of human papilloma viruses (HPVs) which are transmitted through sexual contact. The virus can also be transmitted from mother to baby during childbirth. Most people infected with HPV have no symptoms but […]
- Venipuncture
The puncture of a vein with a needle to withdraw blood. Also called phlebotomy or, more often, a blood draw.
- Venom
A poison, particularly one secreted by an animal. Examples are bee venom, snake venom, scorpion venom, and spider venom. Snake venom is also called venin.