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emilysouders
on FreezingBlue Flashcards.
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mantle layer
gives rise to gray matter (cell bodies)
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marginal layer
gives rise to white matter (axons from cells bodies in mantle later)
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roof plate and floor plate of mantle layer
seperate right and left side
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sulcus limitans of mantle layer
seperates dorsal and ventral sides
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alar plates of mantle layer
gives rise to association neurons with a sensory function
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basal plates of mantle layer
- gives rise to motor neurons
- cell bodies and synapses in CNS
- axons in PNS
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sensory neurons derived from..
neuroglial cells- grow central process into dorsal side and synapse with assoc. neurons from alar plate
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choroid plexus
produces cerebrospinal fluid, associated with hindbrain
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lateral ventricles
telencephalon
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third ventricle
diencephalon
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aqueduct of Silvius
mesencephalon
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fourth ventricle
meten and myelencephalon
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medulla oblongata SS
- general sensations from head and face
- 1st association center for hearing and balance
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medulla oblongata VS
- recieve sensations from throat and mouth
- 1st assoc. center for taste
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medulla oblongata VM
innervate the branchial and smooth muscles and glands of gut
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medulla oblongata SM
innervate tongue muscles
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pyramids of medulla
- visceral control to reticular formation
- myelen
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pons
- relay station for motor info from cerebral cortex to cerebellum
- meten
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cerebellum
- motor coordination, balance, proprioreception
- meten
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superior colliculi
- assoc. neurons for visual reflexes (subconcious localizing visual stimuli)
- mesen
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inferior colliculi
- center for auditory reflexes (subconscious processing to localize sound)
- relay station for info going to cerebral cortex
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thalamus
- relay station for ALL sensory info intended for cerebral cortex EXCEPT smell
- dien
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hypothalamus
- directly regulates most viseral functions (autonomic nervous system)
- control pituitary secretions
- emotions
- dien
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infundibulum
- connects hypothalamus and pituitary gland
- dien
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cerebrum
- site of conscious thoughts, decisions, and movements
- telen
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basal ganglia
- initiate stereotypical movement patterns
- telen
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white matter in divided into..
columns which then divide into nerve tracts or fasiculi
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dorsal horns of gray matter
contain sensory axons that synapse with internerons
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ventral horns of gray matter
contain the neuron cell bodies of somatic motor neurons
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lateral horns of gray matter
contain the neuron cell bodies of autonomic neurons
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reflex arc order
- sensory receptor
- sensory neuron
- interneuron
- motor neuron
- effector organ
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endoneurium in PNS
surrounds individual axons
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perineurium in PNS
binds together fascicles (groups of axons)
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epineurium in PNS
holds fasicles that form the nerve together
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cauda equina
gathering of spinal nerves at end of spinal cord
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conus medullaris
where spinal cord ends (L1)
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fasciculus proprius
short tracts in white matter that form a ring around gray matter
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dorsal comlumn tract
carries proprioreception, two point discrimination, pressure, and vibration info to the cerebral cortex
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spinothalamic tract
carries pain, temp, light, touch, pressure, tickle, and itch info to cerebral cortex
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spinocerebellar tract
carries proprioreceptive info to the cerebellum
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lateral corticospinal tract
controls movements of the neck, trunk, upper and lower limbs, especially fingers
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anterior corticospinal tract
controls movement of neck and trunk
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parietal lobe
tactile info, taste
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frontal lobe
generally responsible for higher function like logic and thought
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precentral gyrus
voluntary motor output originates here in 5th layer of cells (pyramidal)
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