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20 Cards in this Set

  • Front
  • Back
which reflex is important in maintaining muscle tone and posture?
Myotatic (stretch reflex)
this reflex is stimulated by nociceptive (painful) stimulus
withdrawal reflex
what is the clasp-knife reaction?
the inverse myotatic reflex: increasing resistance to passive flexion until, at some point, resistance ceases. Seen in pts with spastic paralysis
what does the hindbrain consist of?
Medulla oblongata
Pons
Cerebellum
which cranial nevers exit the midbrain?
CN III
CN IV
where are the cerebral peduncles (colliculi) found?
on the midbrain
what are the inferior colliculi involved with?
is the principal midbrain nucleus of the auditory pathway

directional turning and direction of sound sources
what is the function of the superior colliculi
control conjugate eye movements when the visual environment is surveyed
name some disorders involving the basal ganglia
Parkinson's
Huntington's chorea
cerebral palsy
What does the forebrain consist of?
cerebrum
hypothalamus
thalamus
which CN is assoc. with taste?
Facial- anterior tongue
Glossopharyngeal- posterior
what part of the brain is damaged with parkinson's and huntington's?
Basal ganglia
Where is the posterior fossa and what does it contain?
It's the infratentorial compartment and contains the brain stem and cerebellum
What is the Monroe-Kellie hypothesis?
Any increase in volume of one of the cranial constituents(brain, Blood, CSF) must be compensated by a decrease in volume of another
What is the treament of > ICP?
Hyperventilation
Raised head of the bed-allows venous drainage
Extraventricular drain
Craniotomy
What are the different types of herniations?
Transtentorial
Tonsillar
Subfalcine
Upward central
What is a subfalcine herniation?
tissue moves from one side of the supratentorial space to the other under the falx cerebri
What is a tonsillar herniation?
from the posterior fossa through the foramen magnum
What is the MC CNS herniation? What does it affect?
Transtentorial (uncal) herniation

It compresses the 3rd CN and the upper midbrain (Causes dilated pupil and unconciousness from its effects on the RAS)
What is the hallmark of SIADH?
High urine sodium level (>20 mEq/L)