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| Question | Answer |
| any change or signal in the environment that an organism can recognize and react to is called _______. | Stimulus |
| A reaction to a stimulus. | Response |
| What does your nervous system include? | Your brain, spinal cord, and the nerves that connect these organs to all parts of your body. |
| The message that a neuron carries. | A nerve impulse. |
| Picks up a stimulus and converts it into a nerve impulse. | Sensory neuron. |
| Individual nerve cells that carry information through your nervous system. | Neurons |
| Carries a nerve impulse to another interneuron or to a motor neuron. | Interneuron |
| Sends an impulse to a muscle or gland , enabling it to respond. | Motor neuron |
| Includes the brain and spinal cord. | Central nervous system |
| Includes all nerves outside of the cns. | Peripheral nervous system |
| The largest organ in the nervous system as well as the control central of the cns. | Brain |
| A thick column of nervous tissue that links the brain to the peripheral nervous system. | Spinal cord |
| Where you think and store memories. | Cerebrum |
| Controls balance and coordination. | Cerebellum |
| controls involuntary movment. | Medula (brain stem) |
| what does your brain stem connect to. | Spinal cord |
| What surrounds and protects your spinal cord. | Vertebrae column |
| What does the peripheral nervous system include/ | The somatic nervous system nerves and the autonomic nervous system nerves. |
| controls voluntary actions. | Somatic nervous system |
| Controls involuntary actions. | autonomic nervous system. |
| An opening that lets light enter the eye. | Pupil |
| a ring of muscle that controls the amount of light that enters the eye. | iris |
| light passes through this. | the lens |
| the back of the eye that contains light- sensitive cells that produce nerve impulses. | retina |
| Where do the impulses from the retina travel to. | optic nerve |
| 4 main taste sensations. | sweet, sour, salty, and bitter. |
| a nerve cell that responds to chemical molecules in the air. | olfactory cell |
| Alerts you to danger. | Pain |
| regulates most activities by sending nerve impulses throughout the body. | Nervous system |
| regulates short term and long term activities by sending chemicals throughout the body. | Endocrine system |
| an organ that produces or regulates a chemical. | Gland |
| A chemical produced by an endocrine gland. | hormone |
| Speeds up your heart rate and breathing rate. | Adrenaline |
| kicks in when your angry, frightened, or excited. | fight-or-flight |
| Cells that are specialized in a way that enables them to recognize a hormone's chemical structure. | Target cells |
| The part of your brain that links the two syestems. | Hypothalamus |
| Works with the hypothalamus to control many activities. | Pituitary gland |
| GOOD | LUCK DON'T FAIL |
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