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human body syslems

TermDefinition
2 organ a body structure that is composed of different kinds of Tissues that work together
3 organ system a group of organs that work together to perform a major function
4 gland an organ that produced and releases chemicals either through ducts or into the bloodstream
5 hormone 1 the chemical produced by an endocrine gland 2 A chemical that affects growth and development
6 stress the reaction of a person body to potentially
7 interactions the direct effect that one thing has on another
8 stabie resistant to sudden change
9 Digestion the process by which your body breaks down food into small nutrient molecules
10 Nutrients the substances in food that provide the raw materials the body cell need to carry out all their essential processes
11 Absorption the process by which nutrient molecules pass through the wall of the digestive system into the blood
12 carbohydrates an energy rich organic compound such as sugar or starch that is made of elements carbon hydrogen and oxygen
13 perists waves of smooth muscle contraction that move food through the esophagus toward the stomach
14 saliva fluid released from glands in the mouth that play an important role machanical and chemical digestion
15 Enzymes proteins that speed up chemical reactions in the body
16 Elimination act of removal of material from the body
17 circulatory system an organ system that transports needed materials to cells and removes waste
18 contract to draw together to reduce in size
19 artery a blood vessel that carrries blood away from the heart
20 Vein a blood vessel that carries blood back to the heart
21 capillary a tiny blood vessels where substances are exchanged between the blood and body cells
22 Lymph fluid that travels through the lymphatic consisting of water white blood cells and dissovled materials
23 Bronchi the two passages that direct air into the lungs
24 Alveoil tiny thin walled sacs of lung tissue specialized for the movement of gases between air and blood
25 Excretion the process of moving waste
26 Nephron small filtering structure in the kidneys that removes waste from blood and produces urine
27 Neuron a cell that carries information through the nervous system
28 synapse the junction where one neuron can transfer an impulse to another neuron
29 impulse the message carried by a neuron
30 Brain the part of the central nervous system that is located in the skull and controls most functions of the body
31 spinal thick column of nervous tissue that links the brain to most of the nerves that branch out through the body
32 Reflex automatic response that occurs without conscious control through the somatic nervous system
33 Negative feedback the process by which a system is turned off by the condition it produces
1 Tissue a group of similar cells that perform a specific function
Created by: user-1717983
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