Receptors and Sensitivity
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Questions and Answers

Which cranial nerve controls the extrinsic eye muscles that abduct the eyeball?

  • Abducens (correct)
  • Optic
  • Oculomotor
  • Olfactory
  • How many pairs of spinal nerves are there in the cervical section of the spinal cord?

  • 8 (correct)
  • 5
  • 12
  • 31
  • Which nerve innervates the muscles of facial expression?

  • Glossopharyngeal
  • Vagus
  • Vestibulocochlear
  • Facial (correct)
  • What is the function of the brachial plexus?

    <p>Innervate the upper limb</p> Signup and view all the answers

    Which reflex is initiated by a painful stimulus and results in the automatic withdrawal of a threatened body part?

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

    What is the main neurotransmitter released by ANS neurons?

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

    Which division of the ANS mobilizes the body during extreme situations?

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

    What is the function of the sensory neuron in the nervous system?

    <p>Transmit afferent impulses to the CNS</p> Signup and view all the answers

    Which type of fibers release acetylcholine and are called cholinergic fibers?

    <p>Ach-releasing fibers</p> Signup and view all the answers

    What is the function of the effector in the nervous system?

    <p>Respond to efferent impulses</p> Signup and view all the answers

    Which type of cholinergic receptor is always stimulatory?

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

    Where are Meissner's corpuscles found?

    <p>Just beneath the epidermis in the dermal papillae</p> Signup and view all the answers

    What type of touch do Meissner's corpuscles respond to?

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

    Which type of corpuscles respond to deep pressure?

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

    Where are Ruffin's corpuscles located?

    <p>In the dermis and subcutaneous tissue</p> Signup and view all the answers

    What type of pressure do Ruffin's corpuscles respond to?

    <p>Deep and continuous pressure</p> Signup and view all the answers

    What do free or naked nerve endings primarily respond to?

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

    What are encapsulated dendritic endings composed of?

    <p>One or more fiber terminals of sensory neurons enclosed in connective tissue capsule</p> Signup and view all the answers

    What are the two types of cholinergic receptors named after?

    <p>Drugs that bind them</p> Signup and view all the answers

    What are the cranial nerves labeled with?

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

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