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Ch. 14 Vocabulary

cell the basic unit of structure a d function in a living thing.
cell membrane the outside boundary of a cell.
nucleus the control center that directs the cell's activities and contains the information than determines the cell's form and function.
cytoplasm the material within a cell apart from the nucleus.
tissue a group of similar cells that perform the same function.
muscle tissue enables movement of the body and internal organs.
nervous tissue directs and controls the process.
connective tissue provides support got your body and connects all its parts
epithelial tissue protects the delicate structures that lie beneath it ..
organ a structure that is composed of different kinds of tissue.
organ system a group of organs that work together to perform a major function.
homeostasis the process by which an organism's internal environment is kept stable in spite of changes in the external environment.
stress the reaction of your body to potentially threatening, challenging, or disturbing events.
(12.2) skeleton all the bone in your body.
vertebrae your backbone.
joint a place in your body where two bones come together.
ligament the connective tissue that holds the bones on moveable joints.
cartilage more flexible than bone
compact bone a bone that is hard and dense but not solid
spongy bone a part of a bone that has many small spaces within it.
marrow the connective tissue in between the spaces in bones.
osteoporosis a condition in which the body's bones become weak and break easily
(12.3) involuntary muscle muscles that are not under your conscious control
voluntary muscle muscles that are under your conscious control
skeletal muscle muscles attached to the bones of your skeleton and provide the force that moves your bones.
tendon a strong connective tissue that attaches muscle to bone
striated muscle muscles that appear banded
smooth muscle the inside of many internal organs
cardiac muscle muscle that is found only in your heart
(12.4) epidermis the outer layer of the skin
melanin a pigment, or colored substance, that gives skin its color.
dermis the inner later of the slin
pore openings in which perspiration reaches the surface
follicle structures in which hairs grow within the dermis
cancer a disease in which some cells in the body divide uncontrolably
Created by: s730496