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Homeostasis

Extra Credit 1/20/23  

Name: ___________________________________
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Across
2
A state of balance in the body
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On the underside of leaves. Open and close in response to changes in available water (2 words)
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System of the body that enables gas exchange; oxygen is inhaled and carbon dioxide is exhaled
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Rate increases in response to exercise
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Finger-like projections on the inside of the small intestine through which nutrients diffuse into the bloodstream
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Chemical signal produced by nerve cells
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Control center of the body; function can be compared to the nucleus of a cell
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Protein in the cell membrane into which a chemical signal or hormone may fit
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System of the body that produces hormones in glands used to help regulate the body. Has a relatively slow response but effects last longer.
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System of the body involved in regulation; works quickly but effects are short-lived
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Electrical signal that travels across nerve cells from one end to the other.
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The body's reaction to a stimulus
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Organs of the respiratory system
Down
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The brain receives information about an imbalance in the body and takes steps to correct the imbalance. (2 words)
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Control of the conditions inside the body, with the help of the nervous and endocrine systems
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Controls gas exchange and water balance in plants
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System of the body that breaks down food into nutrients the body can use.
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The smallest blood vessel; allows for the diffusion of molecules from and to the blood.
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Another name for a nerve cell
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System of the body that transports materials around the body
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Tiny structures that look like bunches of grapes inside the lungs that allow for the diffusion of respiratory gases.
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A change that happens inside or outside the body that causes a response by the body
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Information the brain receives about conditions in the body
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The space between nerve cells
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Type of nervous system response that is involuntary
If you have attempted every question on the final exam you may do this puzzle for extra credit.