Spinal 3 Flashcards
(32 cards)
the brainstem is made up by?
MO, pons and midbrain
contains reflex centers associated with respiration, CV and consciousness
brainstem
contains important nuclei of CN III through XII
brainstem
Parkinson’s is due to neuronal degeneration of?
substantia nigra (Lewy Bodies) Lewy has Parkinson’s
how much CSF in present in an adult?
140ml-270ml
name the meninges of the brain from the inside out
PAD, pia, arachnoid, and dura mater
where is a spinal tap performed?
in subarachnoid space (between arachnoid and pia)
what is the innermost layer of the neural tube?
ependymal cells
what produces CSF?
choroid plexus
what reabsorbs CSF?
arachnoid granulations
how much CSF is present in the ventricles?
~25ml
how many pairs of spinal nerves are there?
31
what does the Bell-Magendi law state?
dorsal roots-sensory afferent fibers
ventral roots-motor efferent fibers (*motor in the front)
**SAME-sensory afferent motor efferent
where does the spinal cord terminate?
L1/L2
what is the end of the spinal cord called?
conus medullaris
the cauda equina is the roots for lumbar, sacral and coccygeal nerves that travels through what before forming the “tail”?
lumbar cistern
the midbrain consists of what structures?
tectum (roof-“tent”) and peduncles
how does CSF exchange between the 3rd and 4th ventricles?
cerebral aqueduct of sylvius
This part of the brain includes the tegmentum, substantial nigra, crus cerebri, and CN 3 and 4
cerebral peduncles
Black color, dopamine from tyrosine, melanin is byproduct that causes the dark color
substantia nigra
part of the cerebral peduncle, corticospinal, corticopontine, corticobulbar, corticomesencephalic fibers (eye movements)
crus cerebri
The medial portion of the cerebellum
vermis
The anterior of the cerebellum where general muscle tone comes from is called?
paleocerebellar
The posterior cerebellum is called the neocerebellum, what does it do?
coordination of skilled movements
