quiz questions Flashcards

1
Q

The monosynaptic reflex is mediated by muscle spindles, and produces an inhibitory response. True or false.

A

false - produces excitatory on agonist

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2
Q

Which of the following is not a basic component of spinal reflexes?

Motor neuron

Sensory afferent

,
Somatosensory cortex

A

somatosensory cortex

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3
Q

Electrical Vestibular Stimulation (EVS) uses small electrical currents to activate _________.

A

vestibular afferents

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4
Q

Which of the following properties does not describe Renshaw Cells?

Renshaw cells act as a “limiter,” preventing overactivity of the effector muscle

Renshaw cells are activated collaterally from Alpha motor neuron

Renshaw cells release GABA as an inhibitory neurotransmitter.

As motor neuronal activity increases, Renshaw Cells activity increases

A

Renshaw cells release GABA - nO they release glycine

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5
Q

autogenic excitation involves ___ of ____

Autogenic inhibition involves ___ of ____

Recipricol excitaion involces ___ of ____

reicpricol inhibition involves ____ of _____

A

autogenic excitaiton is faciliation of the agonist muscle

reciprocal inhibition is an inhibition of the antagonist

autogenic inhibition is inhibition of the agonist

recipricol excitation is excitation of the antagonist

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6
Q

While Tyler is Home Alone, dog burglars try to steal Winston. One of the burglars sneaks through the basement and steps on a nail to cause pain on the bottom of her foot. What specific pathway does pain travel through to get to the cortex?

A

spinothalmic

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7
Q

Which of the following is not a function of pre-synaptic inhibition?

Prevents calcium channels opening due to GABA release onto the pre-synaptic neuron

Decreases the amount of neurotransmitter released onto the pre-synaptic neuron

Decreases the amount of calcium coming into the pre-synaptic neuron

Neurotransmitter release is decreased onto the post-synaptic neuron

A

decrease the amount of NT released onto the pre-synaptic neuron

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8
Q

pre-synpatic inhibition acts a limiter to prevent the overactivity of. a muscle

A

false - that is recurrent inhibition

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9
Q

Which of the following does not describe autogenic inhibition?

Inhibits the agonist muscle

Comprises of an inhibitory interneuro

Ib inhibitory neuron synapses directly onto the motor neuron

A

Ib inhib.. (its 1a) stretch reflex

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10
Q

Spinal-mediated negative feedback mechanisms (i.e., recurrent inhibition) can be mediated by Renshaw Cells.

Correct answer:

True

False

A

true.

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11
Q
A
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