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| The basic unit of a chemical element |
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| Made of one or more atoms bonded (stuck) together |
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| Smallest functional unit of life. All living organisms are composed of one or more cells. |
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| Make up the second level of organisation. They are formed by joining of the cells that have similar function or structure. |
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| A group of tissues that preform a specific function. |
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| A collection of organs that work together to perform a specific function. |
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| A living thing that's able to perform simple acts of survival |
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| A group of organs working together to turn food in nutrients, which the body uses for energy, growth, and cell repair. |
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| The beginning of the digestive system, where physical and chemical changes occur to food. |
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| Passage from nose and mouth to the larynx and esophagus that is part of the digestive and respiratory system. |
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| Muscular tube connecting the throat to the stomach that uses peristalsis to move food. |
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| J-shaped muscular sac-like organ that stores food and grinds and mixes it into a liquid containing hydrochloric acid and digestive enzymes. |
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| Long tube about 1 inch in diameter 20 feet long that absorbs nutrients and transfers those nutrients into the blood stream. |
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| thick tube 2 1/2 inches in diameter and about 5 feet long that absorbs nutrients and water into the blood stream. it also processes waste so that it is easer to defecate. |
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| The final function of the digestive system that receives stool from the colon and holds stool until it is evacuated. |
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| small muscle control creating wave-like movements that push the contents of the canal forward. |
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| a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of the carbon dioxide from the oxidation of complex organic substances. |
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| A flap of elastic cartilage attached to the larynx that closes when food passes by |
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| The primary organ of the circulatory system |
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| Carries oxygen and nutrients away from the heart to the body. |
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| Carries carbon dioxide and waste towards the heart |
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| Very tiny blood vessels connecting arteries and veins. |
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| Control the flow of blood through the heart by opening and closing during contractions |
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| Primary organ of the Respiratory System that take in oxygen and gives off carbon dioxide. |
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| Hollow muscular organ which holds the vocal chords (Voice Box) which produces sound |
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| A hollow tube (wind pipe) that connect the larynx to the right and left of the bronchus |
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| The air sacks at the end of the bronchioles where the gas exchanges takes place (oxygen in the carbon dioxide out) |
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| A sheet of internal skeletal muscle that extends across the bottom of the thoracic cavity (heart\lungs) that pulls and pushes against the lungs as we inhale and exhale. |
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| a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide of complex organic substances. |
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| The passage that leads from the cavities of the nose and mouth to the larynx |
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| Forms a protective layer both inside and on body surface. |
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| Supports and connects tissues and acts as a transport system |
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| Conducts electrical or nerve impulses to and from the Central nervous system by means of neurons. |
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