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artery - Answers - ✔✔a blood vessel that carries blood away from the heart
capillary - Answers - ✔✔a tiny blood vessel; food, oxygen, and other substances pass
from the capillaries into the cells
cell - Answers - ✔✔the basic unit of body structure
digestion - Answers - ✔✔the process of physically and chemically breaking down food
so that it can be absorbed for use by the cells
hormone - Answers - ✔✔the substance secreted by the endocrine glands into the
bloodstream
hemoglobin - Answers - ✔✔the substance in red blood cells that carries oxygen and
gives blood its color
immunity - Answers - ✔✔protection against a disease or condition
menstruation - Answers - ✔✔the process in which the lining of the uterus breaks up
and is discharged form the body through the vagina
metabolism - Answers - ✔✔the burning of food for heat and energy by the cells
organ - Answers - ✔✔groups of tissues with the same function
peristalsis - Answers - ✔✔involuntary muscle contractions in the digestive system that
move food down the esophagus through the alimentary canal
respiration - Answers - ✔✔the process of supplying the cells with oxygen and removing
carbon dioxide from them
system - Answers - ✔✔organs that work together to perform special functions