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HHS Body Structure

Key Terms

Chromatin Structural component of the nucleus, composed of nucleic acids and proteins
Chromosome Threadlike structures within the nucleus composed of a deoxyribonucleic acid (DNA) molecule that carries hereditary information encoded in genes.
cytoplasm Jellylike substance found within the cell membrane composed of proteins, salts, water, dissolved gases, and nutrients
Deoxyribonucleic acid (DNA) Molecule that holds genetic information capable of replicating and producing an exact copy whenever the cell divides
diaphragm muscular wall that divides the thoracic cavity from the abdominopelvic cavity
metabolism sum of all physical and chemical changes that take place in a cell or an organism
organelle cellular structure that provides a specialized function
pathology Study of the nature of diseases, their causes, development, and consequences
peristalsis Rhythmic contraction and relaxation of the walls of a tubular organ to propel its contents onward.