Nervous System Sensory Functions
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Questions and Answers

What is the function of a mechanoreceptor?

  • They sense chemical stimuli, examples being taste, smell and the osmotic pressure of the body’s extracellular fluids
  • They sense pain
  • They sense physicial stimuli, including pressure, vibration, sound and gravity. (correct)
  • They sense temperature and changes in temperature

Visceral senses:

  • Help sense the chemical environment of our blood and body fluids
  • Are located in, and sense information from, the somatic structure of skin, muscles, joints and organ capsules
  • Help monitor the state of the internal environment
  • Both A & C (correct)

Which of the following is not a major somatosensory modality?

  • Proprioception (correct)
  • Discriminative touch
  • Temperature
  • Nociception

Which of the following is not somewhere you would expect to find nociceptors?

<p>Central nervous system (A)</p> Signup and view all the answers

When might you experience hyperalgesia?

<p>After a papercut (C)</p> Signup and view all the answers

The headache in forehead and behind the eyes sometimes felt when eating ice cream, also known as “brain freeze”, involves referred pain along what cranial nerve?

<p>The trigeminal (5th) cranial nerve (A)</p> Signup and view all the answers

Which of the following steps in defining the activation of a reflex is incorrect?

<p>Sensory information activates a receptor that sends information to the PNS via an afferent neuron (A)</p> Signup and view all the answers

Which of the following components of the eye is responsible for focusing light on the back of the eye?

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

Which of the following muscles helps the eye rotate to look down?

<p>Inferior rectus (A)</p> Signup and view all the answers

Which of the following is associated with an image formed on the retina?

<p>Cones convey information regarding the color of the object (A)</p> Signup and view all the answers

The anterior fibrous tunic of the sclera is highly modified to form a transparent area of the eye known as the:

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

Where is the retina located in the eye?

<p>The posterior aspect of the eye (A)</p> Signup and view all the answers

Which part of the ear consists of a space spanned by three small bones?

<p>Middle ear (A)</p> Signup and view all the answers

The receptors for static and dynamic equilibrium are located in the:

<p>semicircular canals and vestibule (D)</p> Signup and view all the answers

Which structure of the mouth is most associated with taste?

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

Axons from the three cranial nerves carrying taste information travel first to which brain structure?

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

Collectively the axons that pass through the cribriform plate are called the:

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

What is anosmia?

<p>Loss of the sense of smell (C)</p> Signup and view all the answers

Which structure contains the primary motor cortex?

<p>precentral gyrus of the frontal lobe (A)</p> Signup and view all the answers

Meninges are found:

<p>associated with the CNS (B)</p> Signup and view all the answers

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