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Maders chp 8 nervous
Nervous system Prado
Question | Answer |
---|---|
What lets muscles do something as related to the nervous system? | nerves activate effectors/motor output |
The brain and spinal cord are what part of the nervous system? | Central Nervous system |
The nerves that come off the spinal cord and brain are what part of the nervous system? | Peripheral Nervous System |
Nerves that come off the brain to the face are what> | Cranial nerves |
Nerves that come off the spine to other locations are what? | Spinal nerves |
What is a individual nerve called? | Neuron |
What cells make myelin, phagocytosis, make CSF, maintain ion balance, and are responsible for re-uptake of neurotransmitters? | Glial |
What is the white fatty substance around the axon? | Myelin |
What is the function of myelin? | protection, insulation, conduction of impulses |
Sensory/Afferent neurons send messages where? | CNS |
Motor/Efferent neurons send messages where? | CNS to PNS |
Where do Efferent msgs end up? | Muscles |
What is the function of a dendrite? | Grab message |
what is the function of the Axon? | message "highway? |
What neurons are entirely within the CNS | Interneurons |
How long do neurons live? | Life |
the Sodium potassium pump is what type of transport system? | Active |
If the cell is "resting" the cell membrane is what? | Polarized (-) |
If the resting membrane is reversed the cell is what? | Depolarized (+) |
conduction of the action potential is called what? | propagation |
The faster messages get sent on _____ axons. | myelinated |
why are myelinated axons' messages faster? | Jumping in nodes of ranier |
What is another term for myelinated propagation? | Saltatory |
What role do the synaptic vesicles have? | Carry neurotransmitters to axon terminal |
the neurotransmitters are released into the synaptic cleft when? | then the impulse arrives and the vesicle fuses with presynaptic membrane |
What grabs the neurotransmitters after they are released? | dendrite or muscle/effector |
Why won't every message cause a reaction? | Has to reach action potential |
There are over 25 identified ______ molecules id in the nervous system | Neurotransmitter |
what happens to neorotransmitters are theyre released by the presynaptic membrane? | some bind w/ postsynaptic membrane, some are re-uptaken by the glial cells |
What is a cluster of cell bodies in the PNS? | Ganglia |
What is a cluster of axons in pns? | Nerve |
What is a cluster of cell bodies in the CNS? | Nuclei |
What are clusters of axons in teh CNS? | Tracts |
Cell bodies and small unmyslinated axons are what? | Grey matter |
Mylinated axons, nerves/tracts are what? | White matter |
What are bundles of nerve fibers called? | Fasicles |
What is the layer of connective tissue surrounding an idividual axon? | endoneurium |
What is the layer of connective tissue surrounding fasicles? | Perineurium |
What is the layer of connective tissue surrounding a entire nerve? | Epineurium |
The Meneges and CFS are CNS ____ structures. | Supportive |
The three protective membranes around outer surfaces of brain and spinal cord are? | Dura mater, Arachnoid mater, and Pia Mater |
where is the Epidural space in the meneges? | Btwn Bone and Dura mater |
Where is the Sub dural space in the meneges?> | Btwn dura and arachnoid mater |
Where is the sub arachnoid space in the meneges? | below the acrachnoid |
Where is there no space in the meneges? | btwn Pia mater and brain for spinal cord |
What is hydrocephalus? | to much CSF |
What can cause to much CFS? | to much is made or blockage that effects reabsorbtion. |
the four main regions of the brain are the Cerebrum, ____, brain stem, and cerebellum. | Diencephalon |
Largest part of the the brain is what? | Cerebrum |
corpus callosum is what type of matter? | white |
cerebral cortex is what type of matter?> | Grey |
cerebrum is primary _____ area and primary _____ area | motor, sensory |
grey matter area of cerebrum controls what? | motor, and limbic (learning, memory) |
Diencephalon includes the thalamus and the _____ | hypothalamus |
hypothalamus controls _______functiions | homeostatic |
thalamus is the _____ editor | sensory |
Brain stem or |