Question 1

Which of the following best explains why certain smells can trigger vivid memories and strong emotions?

Accepted Answer

Olfactory pathways project directly to the limbic system, which is involved in emotion and memory.

Question 2

In rodents, the vomeronasal organ (VNO) is primarily responsible for detecting which type of chemical signals?

Accepted Answer

Sex pheromones

Question 3

Odorant molecules must dissolve in which layer before binding to receptors on olfactory sensory neurons?

Accepted Answer

Mucus layer

Question 4

Which of the following is TRUE regarding taste receptor cells?

Accepted Answer

Each taste cell is sensitive to only one basic taste sensation.

Question 5

Which protein is involved in taste transduction and is specifically associated with the detection of sweet, bitter, and umami tastes?

Accepted Answer

Gustducin

Question 6

A patient presents with an inability to hear due to damage to the cochlea. What type of hearing loss does this represent?

Accepted Answer

Sensorineural hearing loss

Question 7

Which fluid in the cochlea is most similar in composition to intracellular fluid?

Accepted Answer

Endolymph

Question 8

The perception of pitch in sound is determined by which property of the sound wave?

Accepted Answer

Frequency

Question 9

Which structure in the ear transforms sound waves into electrical signals?

Accepted Answer

Cochlea

Question 10

Which of the following best describes the process by which sound waves are converted into action potentials?

Accepted Answer

Sound waves cause hair cells in the cochlea to bend, opening ion channels and generating action potentials.

Question 11

Which of the following is a function of the organ of Corti?

Accepted Answer

Contains hair cell receptors that detect fluid waves in the cochlear duct

Question 12

Which of the following equations correctly relates the frequency ($$f$$), wavelength ($$\lambda$$), and speed of sound ($$v) in $$air?

Accepted Answer

$$v = f 	imes \lambda$$

Question 13

A person is unable to localize the source of a sound. Which neural process is most likely impaired?

Accepted Answer

Simultaneous input from both ears to the auditory cortex

Question 14

Which of the following is TRUE about the transmission of sound from the external environment to the brain?

Accepted Answer

Sound waves strike the tympanic membrane, are transferred by middle ear bones to the oval window, and generate fluid waves in the cochlea.

Question 15

Which of the following is NOT one of the five basic taste sensations?

Accepted Answer

Minty

Question 16

Which pathway is responsible for additional taste sensations such as 'hot spicy' and 'minty'?

Accepted Answer

TRP (transient receptor potential) pathways

Question 17

Which type of hearing loss results from damage to the neural pathway between the ear and the cerebral cortex?

Accepted Answer

Central hearing loss

Question 18

Which of the following best describes the role of the tectorial membrane in hearing?

Accepted Answer

It bends the stereocilia on hair cells, leading to the opening of ion channels.

Question 19

A patient craves salty foods after excessive sweating. This is an example of:

Accepted Answer

Specific hunger (salt appetite)

Ch 10 B Sensory Physiology: Olfaction, Gustation, and Auditory Systems

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