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40 Cards in this Set
- Front
- Back
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What are ossicles
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Located in meddle ear, 3 tiny bones in the body
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What does a beta 1 adrenergic agonist do
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Increase heart rate
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What connects the pharynx and the middle ear
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Eustachian tube (auditory tube)
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What effect does post ganglionic parasympathetic discharge have
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Slowed heart rate
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What are rods and cones
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Retinal Photoreceptors
(rods black and white vision) (cones color vision) |
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What makes the lens to change shape
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When ciliary muscles contract and relax
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What and where are aqueous humor and vitreous humor
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VA- posterior cavity- gel like substance, pushes retina against choroid layer.
AH- anterior cavity - watery fluid, maintains shape of front of eye and provides nourishment for cornea |
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Taste buds are what type of sensation
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Organs of Taste
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Muscarinic receptors are
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Cholinergic receptors, are located on target organ of the parasympathetic nerve
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What causes glaucoma
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Aqueous humor accumulation in the eye, elevating pressure in the eye
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What is cataract
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A scarred cornea or a cloudy lens that blocks the entrance of light preventing stimulations of rods and cones
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What is strabismus
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Cross eyed, eyeballs not aligned and not focus on desired point
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What is conjunctivitis
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Pink eye, dilated blood vessels (viral)
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What is ptosis
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sleepy look covering part of pupil
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What is the iris
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compose of muscles that controls the size of the pupil by regulating the amount of light that enters the eye
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What is the retina
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Innermost layer, lines the posterior 2/3 of the eyeball. Nervous layer containing visual receptors. photoreceptors
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What area of a sensory neuron detects a specific stimulus
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Chemo receptors - taste and smell
Pain receptors - Pain Thermo receptors - Hot and Cold Mechanoreceptors - hearing and balance Photoreceptors - sight |
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What is the tympanic membrane
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Separates the external from middle ear, receives sound waves that makes it vibrate which than is passed on to the tiny bones (ossicles)
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What is the pinna
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Cartilage covered by layer of loose fitting skin
(Auricle= latin meaning "wing") |
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What and where is the oval window
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On the vestibule that separates the middle from the inner ear
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What is in the middle ear
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Tympanic membrane, eustachion tube and ossicles (tiny bones) Malleus (hammer), incus (anvil), and stapes (stirrup)
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What are effector organs for the autonomic nerves
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Heart, bronchial tubes, Iris, blood vessels, sweat glands, intestine, uterus, adrenal medullla, salivary glands, urinary system, bladder wall, internal sphincter
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what is the result of increased intraocular pressure
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glaucoma
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what will relive vagally induce bradycardia
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atropine muscarinic
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what is another name for cranial nerve III
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Occulomotor
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what is cerumen
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soft yellow-brown secretion produced by external ear
EAR WAX |
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A drug that causes the heart to beat stronger and faster is called
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Sympathomimetic
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Alpha and beta receptors are
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adrenergic receptors
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which cerebral lobe is associated with hearing
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temporal lobe
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what is an adrenergic fiber
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A fiber that secretes NE as it neurotransmitter
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vagal discharge activates
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bradycardia
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Olfaction refers to
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sense of smell
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where is the brain is vision interpreted
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occipital lobe
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photoreceptors detect
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light
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which neurotransmitter is secreted by a cholinergic fiber
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NE (norepinephrine)
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A nociceptor detects
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pain
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bone conduction occurs where
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inner ear
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what does the vestibule and semicircular canals do
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keep balance
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fight or flight response is associated with which nervous system
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sympathetic nervous system
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feed and breed system is associated with which nervous system
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parasympathetic nervous system
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