The extension of a neuron through which neural impulses are sent
What is Axon
100
The tiny, fluid-filled gap between the axon terminal of one neuron and the dendrite of another
What is Synapse
100
A chemical messenger produced by the endocrine glands and circulated in the blood
What is Hormone
200
the branching extensions of a neuron that receive information and conduct impulses toward the cell body
What is Dendrite
200
A chemical messenger that travels across the synapse from one neuron to the next and influences whether a neuron will generate an action potential
What is Neurotransmitter
200
The division of the peripheral nervous system that controls the body's skeletal muscles
What is Somatic Nervous System
200
The endocrine system's "master gland" that, in conjunction with an adjacent brain area, controls the other endocrine glands
What is Pituitary gland
300
The end point of a neuron where neurotransmitters are stored
A neural impulse; a brief electrical charge that travels down the axon of a neuron
What is Axon Terminal
300
Nerve cells in the brain and spinal cord responsible for processing information
What is Interneurons
300
The sensory and motor nerves that connect the brain and the spinal cord to the rest of the body
What is Peripheral Nervous System (PNS)
300
One of the body's two communication systems; a set of glands that produce hormones, chemical messengers that circulate in the blood
What is Endocrine System
400
The state of a neuron where it is at rest and capable of generating an action potential
What is Resting Potential
400
Nerves that carry information from the sense receptors to the spinal cord and brain
What is Sensory Nerves
400
The division of the peripheral nervous system that controls the glands and muscles of the internal organs; its subdivisions are the sympathetic (arousing) division and the parasympathetic (calming) division
What is Autonomic nervous system
400
The part of the autonomic nervous system that calms the body
What is parasympathetic division
500
The principle stating that if a neuron fires, then it always fires at the same intensity; all action potentials have the same strength.
What is ALL or None Principle
500
A neurotransmitter effect that makes it less likely that the receiving neuron will generate an action potential, or "fire"
What is Inhibitory effect
500
The part of the autonomic nervous system that arouses the body to deal with perceived threats
What is Sympathetic Nervous system
500
A drug that boosts the effect of a neurotransmitter