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Definition
| The complex group of organs and nerves that control all your actions and thoughts. |
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| Cells that are the basic units of the nervous system. They make up the machinery of the nervous system that is dedicated to controlling and monitoring all of your thoughts , movements and responses to everyday living.They carry messages from one part of your body to another. |
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| Messages of sensation and information that neurons carry from one part of your body to the other. |
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| A bundle of axons from many neurons. |
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| A long structure that carries impulses away from the cell body to other neurons. |
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| A space or gap between the end of the axon of one neuron and the dendrite of another neuron. |
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| Natural chemicals located at the synapse that assist in the transmission of impulses. |
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| Kind of neuron that detects changes in the environment, both outside and inside your body. They carry nerve impulses from the sense organs, the skin, the muscles, and the internal organs to the spinal cord or brain. |
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| Neurons that receive sensory messages and send responses. They are found only in the brain and spinal cord.They then send messages to motor neurons to produce actions. |
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| Neurons that carry a response from the interneurons to the muscles, glands, and internal organs of the body. |
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Definition
| The brain and spinal cord |
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Definition
| Largest and uppermost part of the brain, which regulates your thoughts and actions. |
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| The cerebrum's outer layer which is made up mostly of interneuron cell bodies. |
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| Buried deep within the cerebrum that relays sensory impulses to the cerebral cortex. |
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| Buried deep within the cerebrum and regulates some of your body's most basic needs, such as body temp, sleep, digestion, and the release of hormones. |
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| Part of the brain that coordinates the muscles that you use for action, such as running, walking, or playing the piano. Located under and behind the cerebrum and coordinates a constant flow of nerve impulses from the body and cerebrum. |
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| Structure that connects the cerebrum with the spinal cord. Consistes of three parts: the medulla, the pons, and the midbrain. |
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| Found just above the spinal cord and controls some of the most important functions of life, such as breathing, blood pressure, heart rate, and swallowing. |
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Definition
| Bundle of nerve fibers that link the spinal cord with the brain. Connects the cerebrum with the cerebellum. |
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Definition
| a group of nerves that control certain involuntary actions such as blinking. |
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Term
| Peripheral Nervous System |
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Definition
| Carries messages between the central nervous system and the rest of the body. |
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| The Autonomic Nervous System |
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Definition
| Part of the peripheral nervous system that controls involunatry responses. |
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| Parasympathetic Nervous System |
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Definition
| The subsystem of the autonomic nervous system that genrally slows down the body's functions. Eg. During sleep it slows heartbeat and breathing. |
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| Sympathetic Nervous System |
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Definition
| Subsystem of the autonomic nervous system that works when you are active or under emotional stress. |
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| Other division of the peripheral nervous system that carries sensory information about external stimulations and controls voluntary action of the muscles. Processes information about your skin, muscles, and joints. |
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| A special cord that your body develops that records the pattern of movement. |
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Definition
| A rapid, automatic response to the environment that occurs without action from the brain. |
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| Route the impulses travel during a reflex action. Does not involve the brain but involves only the coordination of sensory and motor neurons. |
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Definition
| Anything that is capable of producing a response. |
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Term
| Electroencephalograph (EEG) |
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Definition
| Special instrument that measures the brain's electrical activity. Gives a visual record of the impulses being processed by the brain. |
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Definition
| The inability to fall or stay asleep. |
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Definition
| A recurren uncontrollable desire to sleep and a loss of muscle tone. |
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Definition
| Condition in which breathing stops periodically during sleep. |
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Definition
| A severe headache caused by changes in the blood vessels in the brain. |
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Definition
| A brief loss of consciousness after a hard blow to the head. |
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Definition
| A bruise, which is a collection of blood in a damaged area caused by a hard blow to the head. |
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| A deep unconsciousness from which a person cannot be awakened. |
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| Abnormal growth of cells. |
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| A convulsive action caused by disorganized brain activity. |
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| Loss of the ability to move a part of the body due to nerve or muscle damage. |
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| The paralysis of the lower body and legs. |
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Definition
| The paralysis of the body from the neck down. |
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Definition
| A physical disorder that develops over several years. |
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| Legal drugs that may be purchased without a doctor's prescription, or written order. |
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Definition
| Drugs available only with a doctor's written order for their preparation and use. |
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Definition
| Drugs that are able to enter the brain and affect the mind and behavior. These include alcohol and nicotine, as well as illegal drugs. |
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Definition
| A different, unknown, or undesirable reaction to a drug. |
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Definition
| Appropriate amount of a drug that is prescribed. |
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Definition
| Different effects produced by combined drugs. |
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