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Coordination and Control
nervous system, brain activity and sleep,nervous system disorders, and how drugs affect the body
50
Health Care
Not Applicable
04/12/2004

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Cards

Term
nervous system
Definition
The complex group of organs and nerves that control all your actions and thoughts.
Term
Neurons
Definition
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.
Term
Impulses
Definition
Messages of sensation and information that neurons carry from one part of your body to the other.
Term
nerve
Definition
A bundle of axons from many neurons.
Term
Axon
Definition
A long structure that carries impulses away from the cell body to other neurons.
Term
Synapse
Definition
A space or gap between the end of the axon of one neuron and the dendrite of another neuron.
Term
Neurotransmitters
Definition
Natural chemicals located at the synapse that assist in the transmission of impulses.
Term
Sensory Neurons
Definition
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.
Term
Interneurons
Definition
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.
Term
Motor Neurons
Definition
Neurons that carry a response from the interneurons to the muscles, glands, and internal organs of the body.
Term
Central Nervous System
Definition
The brain and spinal cord
Term
Cerebrum
Definition
Largest and uppermost part of the brain, which regulates your thoughts and actions.
Term
Cerebral cortex
Definition
The cerebrum's outer layer which is made up mostly of interneuron cell bodies.
Term
Thalamus
Definition
Buried deep within the cerebrum that relays sensory impulses to the cerebral cortex.
Term
Hypothalamus
Definition
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.
Term
Cerebellum
Definition
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.
Term
Brainstem
Definition
Structure that connects the cerebrum with the spinal cord. Consistes of three parts: the medulla, the pons, and the midbrain.
Term
Medulla
Definition
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.
Term
Pons
Definition
Bundle of nerve fibers that link the spinal cord with the brain. Connects the cerebrum with the cerebellum.
Term
Midbrain
Definition
a group of nerves that control certain involuntary actions such as blinking.
Term
Peripheral Nervous System
Definition
Carries messages between the central nervous system and the rest of the body.
Term
The Autonomic Nervous System
Definition
Part of the peripheral nervous system that controls involunatry responses.
Term
Parasympathetic Nervous System
Definition
The subsystem of the autonomic nervous system that genrally slows down the body's functions. Eg. During sleep it slows heartbeat and breathing.
Term
Sympathetic Nervous System
Definition
Subsystem of the autonomic nervous system that works when you are active or under emotional stress.
Term
Somatic Nervous System
Definition
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.
Term
Engram
Definition
A special cord that your body develops that records the pattern of movement.
Term
Reflex
Definition
A rapid, automatic response to the environment that occurs without action from the brain.
Term
Reflex Arc
Definition
Route the impulses travel during a reflex action. Does not involve the brain but involves only the coordination of sensory and motor neurons.
Term
Stimulus
Definition
Anything that is capable of producing a response.
Term
Electroencephalograph (EEG)
Definition
Special instrument that measures the brain's electrical activity. Gives a visual record of the impulses being processed by the brain.
Term
Rapid Eye Movement (REM)
Definition
Dream stage of sleep.
Term
Insomnia
Definition
The inability to fall or stay asleep.
Term
Narcolepsy
Definition
A recurren uncontrollable desire to sleep and a loss of muscle tone.
Term
Sleep Apnea
Definition
Condition in which breathing stops periodically during sleep.
Term
Migraine
Definition
A severe headache caused by changes in the blood vessels in the brain.
Term
Concussion
Definition
A brief loss of consciousness after a hard blow to the head.
Term
Contusion
Definition
A bruise, which is a collection of blood in a damaged area caused by a hard blow to the head.
Term
Coma
Definition
A deep unconsciousness from which a person cannot be awakened.
Term
Tumor
Definition
Abnormal growth of cells.
Term
Seizure
Definition
A convulsive action caused by disorganized brain activity.
Term
Paralysis
Definition
Loss of the ability to move a part of the body due to nerve or muscle damage.
Term
Paraplegia
Definition
The paralysis of the lower body and legs.
Term
Quadriplegia
Definition
The paralysis of the body from the neck down.
Term
Degenerative Disorders
Definition
A physical disorder that develops over several years.
Term
Over-the-counter drugs
Definition
Legal drugs that may be purchased without a doctor's prescription, or written order.
Term
Prescription drugs
Definition
Drugs available only with a doctor's written order for their preparation and use.
Term
Psychoactive drugs
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.
Term
Side Effect
Definition
A different, unknown, or undesirable reaction to a drug.
Term
Dose
Definition
Appropriate amount of a drug that is prescribed.
Term
Synergistic effects
Definition
Different effects produced by combined drugs.
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