Biology Words
- Urea The waste product from the breakdown of excess protein, excreted in the urine.
- Vaccine A medicine that contains a dead or inactive form of a pathogen that is inserted into the body
- Variation Differences between indviduals within a species or between species
- Vasectomy A medical procedure in which sperm ducts are cut or blocked. This acts as a contraceptive method.
- Vasoconstriction The narrowing of a blood vessel to reduce bloodflow to an area
- Vasodilation The widening of a blood vessel to increase blood flow to an area
- Vector An organism that can spread disease
- Vein A blood vessel that returns blood to the heart
- Ventilation The physical act of filling (inhalation) and emptying (exhaling) the lungs with air
- Ventricle The larger of the two types of chambers found in the heart, located below the atria
- Villi Microscopic finger-like projections found on the surface of some cells
- Xylem Dead columnar cells that form tubes to transport water and minerals through plants
- Yield The amount of an agricultural product produced
- Zooplankton Tiny animals found in the sea and fresh water