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26 Cards in this Set
- Front
- Back
A pair of endocrine glands above kidneys. They secrete the hormones epinerione (adrenaline), and norepinephrine, (norepinephrine) which helps arouse body in times of stress
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Adrenal Glands
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Chemical messengers, made by endocrine glands, produced in 1 tissue and affect another
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Hormones
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The body's slow chemical communication system; a set of glands that secrete hormones into the bloodstream
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Endocrine system
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Messages pass to other neurons or to muscles or glands
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Axon
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Branching extensions of a neuron that recieve messages and conduct impulses toward the cell body
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Dendrite
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Interconnected neural cells. They learn, as feedback strengthens or inhibits connections that produce certain results.
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Neural networks
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A simple, automatic inborn response to a senory stimulus, such as the knee-jerk response
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Reflex
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Under the infulence of the hypothalamus, this gland regulates growth and controls other endocrine glands
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Pituitary gland
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The division of the automatic nervous system that clams the body, conserving its energy
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Parasympathetic nervous system
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The division of the automatic nervous system that arouses the body, mobilizing its energy in stressful situations
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Sympathetic Nerbous System
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The division of the peripherial nervous system that controls the body's skeletal muscles
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Somatic Nervous System
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Neurons that carry outgoing information from CNS to the muscles and glands
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Motor Neurons
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CNS neurons that internally communicate and intervene between the sensory imputs and motor outputs
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Interneurons
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Neurons that carry incoming information from the sense receptiors into the CNS
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Sensory Neurons
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The part of the peripheral nervous system that controls the glands and the muscles of the internal organs. Sympathetic division arouses; it's parasympathetic division calms.
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Autonmic Nervous System
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Neural "cables" containing axons. They connect the central nervous system with muscles, glands, and sense organs
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Nerves
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Layer of fatty tissue that encases the Fibers of neurons; enables greater transmission speed of neural impulses as the impulse hops from 1 node to the next
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Myelin Sheath
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The sensory and motor neurons that connect the central nervous system to the rest of the body
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Peripheral Neverous System
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The brian and spinal cord
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Central nervous system
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The body's speedy electrochemical communication system consisting of all the nerve cells of the peripheral and central nervous systems
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Nervous System
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"Morphine within" natural, opiatelike neurotransmitters linked to pain control and to pleasure
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Endorphins
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A neurotransmitter that triggers muscle contraction
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Acetlcholine
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Messengers tat transverse the synaptic gap between neurons. When released, they travel across the synapse and bind to receptor sites on neuron, influencing whether that neuron will generate a neural impulse
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Neurotransmitter
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Junction between the axon tip of the sending neuron and the dendrite or cell body of the recieving neuron. the tiny gap here is called synaptic gap or cleft
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Synapse
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Level of stimulation required to trigger a neural impulse
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Threshold
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Neural impulse, byh and charged atoms in and out of channels in the axon's membrane.
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Action Potential
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