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Prentice Hall Science Explorer, Human Biology and Health: Chapter 1


process by which organisms maintain a relatively stable internal environment


material between the cell membrane and the nucleus


tissue composed of fibers that can contract, causing movement of an organ or part of the body


unpredictably excitable


the tissue forming the outer layer of the body surface and lining the alimentary canal and other hollow structures


a condition in which the body's bones become weak and break easily

compact bone

Hard, dense bone tissue that is beneath the outer membrane of a bone

spongy bone

Layer of Bone tissue having many small spaces and found just inside the layer of compact bone


(anatomy) the point of connection between two bones or elements of a skeleton (especially if the articulation allows motion)


a disease of the joints that makes movement painful

striated muscle

muscle attached to the skeleton, making movement possible, another name for skeletal muscle

smooth muscle

involuntary muscle found in internal organs

cardiac muscle

the muscle tissue of the heart

skeletal muscle

a muscle that is connected at either or both ends to a bone and so move parts of the skeleton


any malignant growth or tumor caused by abnormal and uncontrolled cell division

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