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Science 11

TermDefinition
organ system a group of organs that work together and perform a specific task.
homeostasis an organism’s ability to maintain steady internal conditions when outside conditions change.
nutrient a part of food used by the body to grow and survive.
Calorie the amount of energy it takes to raise the temperature of 1 kg of water by 1° C.
lymphocyte a type of white blood cell that is made in the thymus, the spleen, and bone marrow.
immunity the resistance to specific pathogens, or disease-causing agents.
compact bone the hard, outer layer of bone.
spongy bone the interior region of bone that contains many tiny holes.
neuron the basic functioning unit of the nervous system; a nerve cell.
reflex an automatic movement in response to a stimulus.
hormone a chemical signal that is produced by an endocrine gland in one part of an organism and carried in the bloodstream to another part of the organism.
Created by: user-1984499
 

 



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