Chapters 13-14

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Question Answer
Sensory integration
Sensory receptors respond to change in environment; activation via stimulus=graded potential
The eye
chemical senses (taste and smell)chemoreceptors; respond to checmicals in aqueous solution
The ear (hearing and balance)
Comparison of the somatic and autonomic nervous systems
Parasympathetic vs sympathetic divisions
Visceral reflexes
Neurotransmittersgenerate graded potentials in sensory neuron
transductionstimulus energy converted into the energy of a graded potential
and receptors
receptor potentiala graded potential is a receptor in a seperate cell (ie. Special Senses)
generator potentiala graded potential produced from receptor part of sensory neuron
phasic receptorsfast adapting/bursts of info @ beginning & ending
tonic receptorslittle or no adaptation
a delta fiberssharp pain
buring painc fibers
enkephalinsnuero-t inhibits pain
classify pain recepotrs by1) type of stimuili dietected 2)body location 3) STRUCTURAL COMPLEXITY
nonencapsulatedlocated everywhere in the body; espcially connective/epethilia tissue
tactile/merkel discslight touch receptor/epidermal cells
hair follicle receptorslight tourch receptors detect bending of hairs
encapsulated nerve endings (mechano receptros)1 or more fiber tierminals of sensory neurons in a conntective tissue capsule
Eye 3 Layersfibrous/ vasuclar / inner layers
vascualr layermiddle coat: choroid, ciliary body, iris
p.454 depth perception
volatileodorant must be in gasous state & dissolve in fluid coating olfactory epithel
sound pressure disturbance
maculaemonitor postion of head in space; located in saccule wall
rigid bony labruingthmoves w/ the body
fluids (and gels)w/in membranous labaryinth are free to move at variuos rates r/t forces