Aorta - largest artery, Artery - blood vessel that carries blood away from the heart, Capillary - tiny blood vessel through which nutrients, oxygen and other substances pass to the cells, Cell - The basic unit of the body structure, Digestion - The process of physically and chemically breaking down nutrients so they 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 specialized glands and some cells into the bloodstream, Immunity - Protection against a certain disease or infection so a 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, Organ - Groups of tissues that work together to perform special functions, Peristalsis - The involuntary, wavelike contractions of smooth muscles, Respiration - The act of breathing air into (inhalation) and out of (exhalation) the lungs; supplies the cells with oxygen, removes carbon dioxide, System - Group of organs, Tissue - A group of similar cells that perform a similar function together, Vein - A blood vessel that carries blood back to the heart,

Body Structure & Function

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