Review for Test 4
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The brain weighs ____ lbs and contains _____ neurons
Functions of the brain
4 major parts of the brain
2 main protective coverings of the brain:
Layers of the meninges:
Falx cerebri/falx cerebelli/tentorium cerebella
Blood brain barrier is:
What cells form the blood brain barrier
Define Cerebrospinal fluid; where is it located; how is it formed?; how much do we have?
What are 3 ways CSF contributes to homeostasis?
Functions/location of the medulla oblongata
Decussation of pyramids
Functions/location of pons
Functions/location of midbrain
Reticular activating system
Functions/location of cerebellum
Functions/location of thalamus
Functions (6)/location of hypothalamus
Pineal gland/melatonin
Function/location of cerebrum; cerebral hemispheres; cerebral cortex; gyri, convolutions,
corpus callosum
Lobes of the cerebrum
Limbic system
Functional organization of the cerebral cortex: sensory, motor, and association areas
Cerebral cortex areas: primary somatosensory area, primary visual, primary auditory, primary
gustatory, primary olfactory, primary motor, Brocha’s speech area, somatosensory association,
Cranial Nerves: Know names and corresponding number. Also know descriptions from table
General senses v. special senses
Visible light spectrum
Palpebrae
Extraocular muscles
Conjunctiva
Lacrimal glands, tears
3 tunics of the eyeball and their structures
Cornea, choroid, ciliary body, iris, pupil, retina, macula lutea, central fovea, optic disc
Blind spot
2 types of photoreceptors:
Lens
2 cavities of eye
Aqueous humor/vitreous humor
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Pupillary response
Normal image formation depends on:
Myopia/hyperopia
Refraction abnormalities
Physiology of vision: photopigments, rhodopsin, opsin, retinal
Cyclical bleaching and regeneration of photopigment
Audition
3 principle regions of the ear
Anatomy of external ear: auricle, external auditory canal, tympanic membrane
Middle ear: air filled, 3 auditory ossicles (stapes, incus, malleus), auditory tube
Inner ear: (labyrinth), vestibule (utricle and saccule), cochlea, semicircular canals, ampulla
2 types of fluid in the inner ear:
Hair cells
Know the auditory pathway
Equilibrium (static and dynamic)
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