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</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</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</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</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</p> Signup and view all the answers

    What is the primary function of the eyelashes?

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

    What is the main component of the anterior cavity?

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

    What is the function of the choroid layer?

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

    What is the purpose of the vitreous humor?

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

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

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

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

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

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

    <p>Presbyopia</p> Signup and view all the answers

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

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

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

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

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

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

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

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

    What is the function of the lateral line system?

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

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

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

    What is the function of the statocysts?

    <p>Gravity receptors</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.</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</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</p> Signup and view all the answers

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

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

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

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

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