Mechanoreceptors Simulation

Question 1 of 4

Mechanoreceptors are sensory receptors that respond to

physical forces.

light stimuli.

action potentials.

neurotransmitters.

Correct. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

Incorrect. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

How do muscle spindles (stretch receptors) indicate the extent of a load on a muscle?

They change the voltage of their action potentials.

They change the duration of their action potentials.

They change the direction of their signal transmission.

They change the rate of their signal transmission.

Correct. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

Incorrect. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

Which sequence of events allows mechanoreceptors in the ear to convert sound waves into a signal that can be sent to the brain?

Sound wave → hair cell stimulation → membrane vibration → action potentials → neurotransmitter release → brain

Sound wave → action potentials → hair cell stimulation → membrane vibration → neurotransmitter release → brain

Sound wave → membrane vibration → hair cell stimulation → neurotransmitter release → action potentials → brain

Sound wave → neurotransmitter release → membrane vibration → hair cell stimulation → action potentials → brain

Correct. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

Incorrect. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

Which hair cells along the basilar membrane of your inner ear are primarily activated when you hear a bass playing at its lowest pitches?

Those near the apex (farthest from the oval window)

Those near the base (near the round and oval window)

Those in the middle of the basilar membrane

All areas respond equally if the intensity is high enough.

Correct. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

Incorrect. See Key Concept 45.3 Mechanoreceptors Respond to Physical Forces

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Chapter 45. Mechanoreceptors Simulation