Psychology of Sensory Perception
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Questions and Answers

Which of the following types of acceleration is detected by the saccule?

  • Rotational acceleration
  • Angular acceleration
  • Horizontally directed linear acceleration
  • Vertically directed linear acceleration (correct)

What is the main function of the otoliths in the inner ear?

  • To detect sound waves
  • To detect chemicals in the environment
  • To detect changes in air pressure
  • To regulate balance and equilibrium (correct)

What is the primary function of exteroreceptors?

  • To detect chemicals in the external environment (correct)
  • To detect changes in blood pressure
  • To detect changes in the internal environment
  • To regulate body temperature

Which of the following is an example of a tastant?

<p>A sweet molecule that binds to a taste receptor (A)</p> Signup and view all the answers

What is the primary mechanism by which salt taste is transduced?

<p>Entry of sodium ions through specialized ion channels (D)</p> Signup and view all the answers

Which of the following is a function of the sense of smell in certain species?

<p>To influence the flow of digestive juices (C)</p> Signup and view all the answers

What is the primary mechanism by which bitter taste is transduced?

<p>Activation of G-protein coupled receptors (B)</p> Signup and view all the answers

What is the primary function of the olfactory receptors in the nasal cavity?

<p>To detect chemicals in the environment (C)</p> Signup and view all the answers

What is the primary function of the eyelashes?

<p>To trap fine, airborne debris (A)</p> Signup and view all the answers

What is the main component of the anterior cavity?

<p>Aqueous humor (D)</p> Signup and view all the answers

What is responsible for the unique color of each individual's eyes?

<p>The pigment in the iris (B)</p> Signup and view all the answers

What is the function of the choroid layer?

<p>To nourish the retina (D)</p> Signup and view all the answers

What is the main function of the cornea?

<p>To allow light rays to pass into the interior of the eye (A)</p> Signup and view all the answers

What is the purpose of the vitreous humor?

<p>To maintain the spherical shape of the eyeball (D)</p> Signup and view all the answers

What is the function of the radial muscle in the iris?

<p>To dilate the pupil (A)</p> Signup and view all the answers

What determines the degree of refraction of light rays?

<p>The difference in density between the two media (B)</p> Signup and view all the answers

What is the result of an increase in the angle of refraction?

<p>The refraction increases (B)</p> Signup and view all the answers

What type of mechanoreceptors are responsible for detecting light touch sensation and sensation of texture?

<p>Merkel Cells (A)</p> Signup and view all the answers

What is the term for the age-related reduction in accommodation ability?

<p>Presbyopia (B)</p> Signup and view all the answers

Which type of mechanoreceptors are stimulated by stretch or twisting in the skin?

<p>Ruffini Corpuscles (D)</p> Signup and view all the answers

What is the function of the otolith organs in the vestibular apparatus?

<p>Provide position of the head relative to gravity and changes in rate of linear motion (C)</p> Signup and view all the answers

What is the function of the ciliary muscle and suspensory ligaments in accommodation?

<p>To adjust the strength of the lens (D)</p> Signup and view all the answers

What is the function of the semicircular canals in the vestibular apparatus?

<p>Detect rotational or angular acceleration or deceleration of the head (D)</p> Signup and view all the answers

What is the term for the point on the retina where the optic nerve leaves?

<p>The optic disc (B)</p> Signup and view all the answers

What type of mechanoreceptors are responsible for sensing coarse touch, pressure, and vibrations?

<p>Pacinian Corpuscles (A)</p> Signup and view all the answers

What is the function of the outer segment of photoreceptor cells?

<p>To detect light stimuli (B)</p> Signup and view all the answers

What is the term for the process of gradually regenerating photopigments in the dark?

<p>Dark adaptation (D)</p> Signup and view all the answers

What is the function of the lateral line system?

<p>Somesthetic and proprioceptive mechanoreceptor system (D)</p> Signup and view all the answers

What type of mechanoreceptors are responsible for detecting movement of hairs?

<p>Root Hair Plexuses (A)</p> Signup and view all the answers

What is the type of cell that makes up the outermost layer of the neural portion of the retina?

<p>Rod and cone cells (B)</p> Signup and view all the answers

What is the term for the derivative of vitamin A that is part of the photopigment?

<p>Retinene (D)</p> Signup and view all the answers

What is the function of the statocysts?

<p>Gravity receptors (B)</p> Signup and view all the answers

What is a necessary condition for a molecule to be detected as an odor?

<p>It must be sufficiently volatile to enter the nose in inspired air. (C)</p> Signup and view all the answers

What is the purpose of the 'smell files' in the glomeruli of the olfactory bulb?

<p>To integrate information from multiple receptors (D)</p> Signup and view all the answers

What is the primary role of the vomeronasal organ (VNO) in mammals?

<p>To detect pheromones involved in reproductive behavior (C)</p> Signup and view all the answers

What is the term for the reduction in sensitivity to an odor over time?

<p>Olfactory adaptation (B)</p> Signup and view all the answers

What is the primary function of the olfactory tract?

<p>To transmit olfactory information to the cerebral cortex (A)</p> Signup and view all the answers

What is the term for the lingering of an odor due to the presence of 'odor-eating' enzymes?

<p>Odor persistence (C)</p> Signup and view all the answers

What is the primary function of the G-protein coupled mechanism in olfactory transduction?

<p>To depolarize the olfactory receptor neuron (D)</p> Signup and view all the answers

What is the primary function of the photopigments involved in vision?

<p>To detect light (B)</p> Signup and view all the answers

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