Chapter 10 Flashcards Preview

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Flashcards in Chapter 10 Deck (16):
1

what is the name of the sense neuron that has a receptive field?

Primary Sensory Neuron

2

What is the name of the CNS neuron that synapses with the primary sensory neuron?

Secondary Sensory Neuron

3

What does convergence allow in sensory neurons?

it allows multiple subthreshold stimuli to sum at the postsynaptic neuron

4

What are the four properties of a stimulus?

Modality, Location, Intensity, Duration

5

define modality

what type of stimulus

6

How is intensity coded?

number of receptors activated, frequency of aps coming from those receptors

7

Which receptor fire once when a stimulus is received, but not again until the stimulus ends

Phasic Receptors

8

what in the inner ear contains the sensory receptors for hearing?

Cochlea

9

what do sound waves in the cochlea push on to bend hair cells?

flexible membranes of cochlear duct

10

Name the 3 canals, from top to bottom, of the cochlea

vestibular duct, cochlear duct, tympanic duct

11

which two ducts are continous with each other?

the vestibular and tympanic duct

12

define helicotrema

the small opening that connects the vestibular and tympanic ducts

13

which duct has fluid with high concentrations of K+?

cochlear duct

14

what is the organ of corti composed of?

hair cell receptors and support cells

15

define basilar membrane?

the membrane that the organ of corti sits on

16

what causes hair cells to depolarize?

being bent towards the tallest member of the bundle