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Physiology Lectures 1-5
starting at slide 36 of 4th lecture.
9
Anatomy
Professional
10/12/2011

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Term
what is contraction of pupil to control light inlet? dilataion?
Definition
miosis and mydriasis
Term
Parasympathetic Ocular Innervation (miosis)
Definition
Part of accommodation of pupillary aperture
Origin- E-W nucleus. sends impulses via CN III to ciliary muscle and sphincter of iris. Inhibition of this causes mydriasis.
Term
Sympathetic Ocular Innervation (mydriasis)
Definition
Part of accommodation of pupillary aperture
origin- upper thoracic cord.- sends impulses via superior cervical ganglion & carotid plexus to ciliary muscle and sphincter of eye.
Term
spinal cords contribution to integrated motor control
Definition
spinal cord- programmed local movement patterns (reflexes, complex, rhythmical motion patterns)
Term
hindbrain's contribution to integrated motor control
Definition
hindbrain- vestibular fxn
(maintains axial tone for standing, modifies muscle tone based on vestibular input to maintain equilibirum)
Term
motor cortex's contribution yo integrated motor control
Definition
-activates motor signals to cord
-directs signals (bypass cord when appropriate)
-enables learned muscular patterns
Term
Cerebellum and basal ganglia's contribution to integrated motor control
Definition
accessory motor system
Term
cell types of cerebral cortex
Definition
Granular
-interneurons
-excitatory (glutamate)
-inhibitory (GABA)
Fusiform
-smaller, source of cortical output
Pyrimidal
-larger, source of cortical output
Term
What cerebral cortex layer is responsible for input? output? intercortical association?
Definition
input- Layer IV
output- Layer V (to cord and brainstem), layer IV (to thalamus)
Intercortical- Layer I-III
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