Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
human body sytems
| Term | Definition |
|---|---|
| tissue | a group of similar cells that perform a specific function |
| organ | a body structure that is composed of different kinds of tissues that work together |
| organ system | a group of organs that work together to perform a major function |
| gland | an organ that produces and releases chemicals either thorgh ducts or into the bloodstream |
| hormone | (1) the chemical produced by endocrine gland(2) a chemical that affects growth and development |
| stress | the reaction of a persons body to potentially threatening,changing,or disturbing events |
| interactions | the direct effect that one thing has on another |
| stable | resistant to sudden pain |
| digestion | the process by which your body breaks down food into small nutrients molecules |
| nutrients | the substances in food that provide the raw materials the body cells need to carry out all their essential processes |
| absorption | the process by which nutrient molecules pass through the wall of the digestive system into the blood |
| peristalsis | waves of smooth muscle contractions that move food through the esophagus towards the stomach |
| saliva | fluid released from glads in mouth that play an important role in mechanical and chemical digestion |
| enzymes | proteins that speed up chemical reactions in the body |
| 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 carries blood away from the heart |
| vein | a blood vessel that carries blood back to the heart |
| capillary | a tiny blood vessel where substances are exchanged between the blood and body cells |
| lymph | fluid that travels through the lymphatic system consisting of water , white blood cells, and dissolved materials |
| bronchi | the two passages that direct air into the lungs |
| alveoli | tiny thin-walled sacs of lung tissue specialized for the movement of gases between air and blood |
| exertion | the process of moving wastes |
| nephron | small filtering structure in the kidneys that removes wastes from blood and produces urine |
| neuron | small filtering structure in the kidney that removes wastes from blood and produces urine |
| synapse | the junction where one neuron can transfer an impulse to another neuron |
| impulse | the message carried by neuron |
| brain | the part of the central nervous system that is located in the skull and controls most function of the body |
| spinal cord | thick column of nervous system that links the brain to most of the nerves that branch out through out the body |
| reflex | automatic response that occurs without conscious control through the somatic nervous system |
| negative feedback | the process by which a system is turned off by the condition it produces |
Created by:
user-1717823
Popular Science sets