CH9 Studyguide

CH9 Studyguide - ax axle dendr funi gangli lemm mening moto...

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ax axle dendr tree funi small cord or fiber gangli a swelling lemm rind or peel mening membrane moto moving peri all around plex interweaving sens feeling syn together ventr belly or stomach Action Potential- sequence of electrical changes when a nerve cell membrane is expose to a stimulus that exceeds it threshold. Autonomic Nervous System- Effectors that are involuntary, heart, smooth muscle (viscera) in blood vessels and various glands are controlled by the autonomic nervous system. Axon- A nerve fiber that conducts a nerve impulse away from a neuron cell body. Central Nervous System- consisting of brain and spinal chord for the central nervous system. (CNS) Chromatophilic Substance- (Nissl bodies) Membranous sacs within cytoplasm of nerve cells that have ribosomes attached to their surfaces. Convergence - Nerve impulses arriving at the same neuron. Dendrite- Nerve fibers that transmits impulses toward a neuron cell body. Divergence- Spreading apart.
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Effector- A muscle or gland that responds to stimulation. Facilitation- Sub threshold stimulation of a neuron makes it more responsive to further stimulation. Ganglion- A mass of neuron cell bodies, usually outside the central nervous system. Meninges- Located between the bone and soft tissues of the nervous system protects the brain and spinal chord. Membranes. Myelin- lipid-protein (lipo-protein) Neurilemma- Sheath formed from Schwanna cells on the outside of some nerve fibers. Neurotransmitter- Chemical that an axon end secretes to stimulate a muscle fiber to contract or a neuron to fire an impulse. Parasympathetic Nervous System- Peripheral nervous system, which controls skeletal muscle. Peripheral Nervous System- (PNS) the portion of the nervous system outside the central nervous system. Plexus-
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CH9 Studyguide - ax axle dendr funi gangli lemm mening moto...

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