PNA 100 - Test 3 Questions With Correct
Answers
autonomic nervous system - CORRECT ANSWER✔✔-the part of the peripheral
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nervous system that controls the glands and the muscles of the internal organs
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(such as the heart). Its sympathetic division arouses; its parasympathetic division
| | | | | | | | | | |
calms.
somatic nervous system - CORRECT ANSWER✔✔-the division of the peripheral
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nervous system that controls the body's skeletal muscles
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sensory neurons - CORRECT ANSWER✔✔-afferent neurons; neurons that carry
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messages from sensory organs to the brain and spinal cords
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motor neurons - CORRECT ANSWER✔✔-efferent neurons; neurons that carry
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messages from spinal cord/brain to muscles and glands
| | | | | | |
Schwann cells - CORRECT ANSWER✔✔-produce myelin in PNS
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Olingodendrocytes - CORRECT ANSWER✔✔-Produce myelin in CNS
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Astrocytes - CORRECT ANSWER✔✔-Support, protect, growth in CND
| | | | | | |
,Microglia - CORRECT ANSWER✔✔-Protection against microbes, engulf debris
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(CNS)
ependymal cells - CORRECT ANSWER✔✔-Form CSF IN CNS
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satellite cells - CORRECT ANSWER✔✔-Support cells
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Ganglion - CORRECT ANSWER✔✔-Cluster of neuron cell bodies in PNS
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Dorsal Root Ganglion (DRG) - CORRECT ANSWER✔✔-a cluster of neurons (a
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ganglion) in a dorsal root of a spinal nerve
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a nucleus (plural form: nuclei) - CORRECT ANSWER✔✔-Cluster of neuron cell
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bodies in CNS | |
nerve - CORRECT ANSWER✔✔-Bundle it axons of PNS
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White matter - CORRECT ANSWER✔✔-myelinated axons
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- Transmits sensory impulses to brain and motor impulses to effectors
| | | | | | | | | |
gray matter - CORRECT ANSWER✔✔-unmyelinated neuron cell bodies and short,
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unmyelinated axons |
, - Receives and integrates reflexes(spinal reflexes integrated in spinal cord)
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tract - CORRECT ANSWER✔✔-bundle of axons in the CNS
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resting membrane potential - CORRECT ANSWER✔✔--70mV = polarized
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Depolarization - CORRECT ANSWER✔✔-Stimulus causes NA+ channels to open
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(membrane potential becomes positive) | | |
Repolarization - CORRECT ANSWER✔✔-Volatage gated NA+ closes and K+ open,
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causing K to leave neuron (becomes more negative)
| | | | | | |
Hyperpolarization - CORRECT ANSWER✔✔-Too much K+ flows out (refractory
| | | | | | | | |
period)
threshold potential - CORRECT ANSWER✔✔--55mV (if stimulus is not above this
| | | | | | | | | | |
amount it is sub threshold = no AP
| | | | | | |
glutamate and aspartate - CORRECT ANSWER✔✔-excitatory neurotransmitter
| | | | | |
GABA - CORRECT ANSWER✔✔-(Gamma aminobutyric Acid)
| | | | |
An inhibitory neurotransmitter in the brain.
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• is enhanced by anti-anxiety drugs
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Answers
autonomic nervous system - CORRECT ANSWER✔✔-the part of the peripheral
| | | | | | | | | |
nervous system that controls the glands and the muscles of the internal organs
| | | | | | | | | | | | |
(such as the heart). Its sympathetic division arouses; its parasympathetic division
| | | | | | | | | | |
calms.
somatic nervous system - CORRECT ANSWER✔✔-the division of the peripheral
| | | | | | | | | |
nervous system that controls the body's skeletal muscles
| | | | | | |
sensory neurons - CORRECT ANSWER✔✔-afferent neurons; neurons that carry
| | | | | | | | |
messages from sensory organs to the brain and spinal cords
| | | | | | | | |
motor neurons - CORRECT ANSWER✔✔-efferent neurons; neurons that carry
| | | | | | | | |
messages from spinal cord/brain to muscles and glands
| | | | | | |
Schwann cells - CORRECT ANSWER✔✔-produce myelin in PNS
| | | | | | |
Olingodendrocytes - CORRECT ANSWER✔✔-Produce myelin in CNS
| | | | | |
Astrocytes - CORRECT ANSWER✔✔-Support, protect, growth in CND
| | | | | | |
,Microglia - CORRECT ANSWER✔✔-Protection against microbes, engulf debris
| | | | | | | |
(CNS)
ependymal cells - CORRECT ANSWER✔✔-Form CSF IN CNS
| | | | | | |
satellite cells - CORRECT ANSWER✔✔-Support cells
| | | | |
Ganglion - CORRECT ANSWER✔✔-Cluster of neuron cell bodies in PNS
| | | | | | | | |
Dorsal Root Ganglion (DRG) - CORRECT ANSWER✔✔-a cluster of neurons (a
| | | | | | | | | | |
ganglion) in a dorsal root of a spinal nerve
| | | | | | | |
a nucleus (plural form: nuclei) - CORRECT ANSWER✔✔-Cluster of neuron cell
| | | | | | | | | | |
bodies in CNS | |
nerve - CORRECT ANSWER✔✔-Bundle it axons of PNS
| | | | | | |
White matter - CORRECT ANSWER✔✔-myelinated axons
| | | | |
- Transmits sensory impulses to brain and motor impulses to effectors
| | | | | | | | | |
gray matter - CORRECT ANSWER✔✔-unmyelinated neuron cell bodies and short,
| | | | | | | | | |
unmyelinated axons |
, - Receives and integrates reflexes(spinal reflexes integrated in spinal cord)
| | | | | | | | |
tract - CORRECT ANSWER✔✔-bundle of axons in the CNS
| | | | | | | |
resting membrane potential - CORRECT ANSWER✔✔--70mV = polarized
| | | | | | |
Depolarization - CORRECT ANSWER✔✔-Stimulus causes NA+ channels to open
| | | | | | | | |
(membrane potential becomes positive) | | |
Repolarization - CORRECT ANSWER✔✔-Volatage gated NA+ closes and K+ open,
| | | | | | | | | |
causing K to leave neuron (becomes more negative)
| | | | | | |
Hyperpolarization - CORRECT ANSWER✔✔-Too much K+ flows out (refractory
| | | | | | | | |
period)
threshold potential - CORRECT ANSWER✔✔--55mV (if stimulus is not above this
| | | | | | | | | | |
amount it is sub threshold = no AP
| | | | | | |
glutamate and aspartate - CORRECT ANSWER✔✔-excitatory neurotransmitter
| | | | | |
GABA - CORRECT ANSWER✔✔-(Gamma aminobutyric Acid)
| | | | |
An inhibitory neurotransmitter in the brain.
| | | | |
• is enhanced by anti-anxiety drugs
| | | | |
