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NA CH. 6 KEY TERMS

NA CH. 6 KEY TERMSDEFINITIONS
artery a blood vessel that carries blood away from the heart
capillary a tiny blood vessel; food, oxygen, and other substances pass from the capillaries to the cells
cell the basic unit of body structure
digestion the process of physicallly and chemically breaking down food so that it can be absorbed for use by the cells
hemoglobin the substance in red blood cells that carries oxygen and gives blood its color
hormone a chemical substance secreted by the glands into the bloodstream
immunity protection against a disease or condition; the person will not get or be affected by the disease
menstruation the process in which the lining of the uterus breaks up and is discharged from the body through the vagina
metabolism the burning of food for heat and energy by the cells
organ group of tissues with the same function
peristalsis involuntary muscle contractions in the digestive system that move food through the alimentary canal
respiration the process of supplying the cells with oxygen and removing carbon dioxide from them
system organs that work together to perform special functions
tissue a group of cells with similar function
vein a blood vessel that carries blood back to the heart
Created by: jstruss
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