Mastering Ch10 Flashcards
Which of the following describes one of the symptoms associated with Ménière’s disease and what sensory system of the body does it afflict?
vertigo; balance and equilibrium by means of the ear
With Anant’s symptoms of dizziness and low buzzing in his ear, is it certain that he has Ménière’s disease?
No; it is possible that it could be positional vertigo.
Why would a drug that enhances the kidney’s ability to excrete water be given to someone that suffers from Ménière’s disease?
This treatment will decrease the amount of endolymph made.
A neuron that has responded to a stimulus causes decreased activity in neighboring neurons in which process?
Lateral inhibition
Which mechanism causes hair cell depolarization as stereocilia bend in response to sound waves?
Tip links open ion channels, which causes membrane depolarization.
Which of the following type of receptor is involved in hearing?
Mechanoreceptor
A receptor potential is a(n) __________ potential.
graded
Most people are not actively aware of the sensation of clothes on their body throughout the day. This lack of awareness of the stimulus of clothing on the skin is due to which process?
Habituation
Baroreceptors in the aortic arch and carotid bodies are mechanoreceptors that respond to the stretch in these arterial walls with changes in blood pressure. If pressure changes rapidly, the baroreceptors start a feedback mechanism that decreases blood pressure. However, if blood pressure changes slowly, as in developing hypertension, the receptors do not respond. Given this information, the baroreceptors are most likely which type of receptor?
Phasic receptors
Which of the following can activate nociceptors?
Pain and Itch
Which change in an olfactory sensory neuron occurs when an odorant molecule binds to a receptor?
Golf proteins are activated, which increases cAMP and opens cAMP-gated cation channels
Which is a similarity between taste and smell?
Both detect chemical signals dissolved in body fluids.
Which structures contain receptors that detect rotation of the head?
Semicircular canals
Vision is especially acute in the fovea and surrounding macula because of a high density of cone cells and because ______
there are no neurons covering the cones
Which of the following of the following correctly describes how a photoreceptor responds to light?
The cell hyperpolarizes, decreasing the amount of neurotransmitter it releases.
