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human body system
| Term | Definition |
|---|---|
| Tissue | a group of simalar cells that perform a specific function. |
| organ | a body structure that is composed |
| organ system | a group of organs that work together to perform a major function |
| gland | an organ that produces and realses chemicals either through ducts or into bloodstream |
| hormone | the chemical produced by an endorcrine gland |
| stress | the reaction of a persons body |
| interactions | the direct effect that one thing has on another |
| stable | resistant to sudden change |
| diegeston | the process by which your body breaks down food |
| nutrients | the substances in food that provide the raw matirieals that body cells need to carry out all their essential processes |
| absortion | the process by which nutrient molecules pass through the wall of the digestive system |
| carbohydrates | a energy rich organic compound, such as sugar or strach that is made of elements carbon,hydrogen and oxygen |
| peristalis | waves of smootg muscle contractions that move food through the esphagus toward the stomach |
| saliva | fluid realsed from glands in the mouth that play an important role mechanical and chemical diegeston |
| enzymes | protiens that speed up chemical reactions in thebody |
| elimination | act of removal of materials from the body |
| circulatory system | an organ system that transports needed materials to cells and removes waste |
| contract | to draw together to reduce in size |
| artery | a blood vessel that carriers blood away from the heart |
| vien | a blood vessel that carries blood back to the heart |
| capillary | a tiny blood vessel where substances are exchanged between that blood and body cells |
| lymph | fluid that travels lymphatic system consisting or water, white blood, and dissolved materials |
| bronchi | the two paaeges that direct air into the lungs |
| alveoil | tiny thin walled sacs of lung tissue specialzed for the movement of gases between air and blood |
| excretion | the process of moving wastes |
| nephron | small filtering structure in the kidneys that removes wates from blood and produces urine |
| neuron | a cell that carries info through the nervous system |
| synapas | the junction where one neuron can transfer an impulse to another neuron |
| impulse | the meassge carried by a neuron |
| brain | the part of the central nervouse system that is located in the skull and controls most functions most of the body |
| spnal cord | thick cloumn of nervous tissue that links the brain to most of the nerves that branch out through the body |
| reflex | automatic responses that occurs without conscious control through the somatic nervous system |
| negative feedback | the process by which a system is turned off by the conditiion it produces |
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