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Human body system
| 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 |
| Hormone | chemical production by an endocrine glad. |
| Stress | reaction of a person's body to potentially threatening, challenging, or disturbing events. |
| Gland | organ that produces and releases chemicals either through ducts or into the bloodstream. |
| Interactions | direct effect that one thing on another |
| Stable | resistant to sudden change |
| Digestion | process by which your body breaks down food into small nutrient molecules. |
| Nutrients | food that provide the raw materials the body's cell need to carry out all their essential processes. |
| Absorption | process by which nutrient molecules pass through the wall of the digestive system into the blood. |
| Carbohydrates | energy rich organic compound, sugar or starch,made of the elements carbon, hydrogen and oxygen. |
| Peristalsis | waves of smooth muscle contraction that move food through the esophagus to the stomach |
| Saliva | fluid released from glands in the 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 material from the body |
| Circulatory System | organ system that transports needed material to cells and removes waste. |
| Contract | to draw together, to reduce in size |
| Artery | blood vessels that carries blood away from the heart |
| Vein | blood vessel that carries blood to the heart |
| Capillary | tiny blood vessels where substance are exchanged between the blood and body cells |
| Lymph | fluid that travel through the lymphatic system consisting of water,white blood cells, and dissolved material |
| Bronchi | 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 |
| Excretion | process of moving wastes |
| Nephron | small filtering structure in the kidneys that removes waste from the blood and produces urine |
| Neuron | cell that carries information through the nervous system |
| Synapse | junction where one neuron can transfer an impulse to another neuron |
| Impulse | message carried by a neuron |
| Brain | part of the central nervous system that is located in the skull band controls most functions of the body |
| Spinal Cord | thick column of nervous tissue that links the brain to most of the nerves that branch out through the body |
| Reflex | automatic response that occur without conscious control through the somatic nervous system |
| Negative Feedback | process by which a system is turned off by the condition it produces |
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