Hamdan- Meninges
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Questions and Answers

Which of the following statements about the autonomic ganglion is correct?

  • It is a sensory ganglion located in the dorsal root ganglia.
  • It receives synapses from the preganglionic neurons. (correct)
  • It is involved in the somatic nervous system.
  • Its neurons do not extend to the organs they serve.

    • What is the function of the conus medullaris?

  • It gives rise to the spinal nerves.
  • It is the cervical enlargement that supplies the upper limbs.
  • It is the lumbar enlargement that supplies the lower limbs.
  • It is the tapered inferior end of the spinal cord. (correct)

    • Which of the following statements about the spinal cord is correct?

  • The length of the adult spinal cord ranges from 20 to 25 cm.
  • It extends from the foramen magnum to the fifth lumbar vertebra.
  • It is flattened slightly anteriorly and posteriorly. (correct)
  • It has a uniform diameter throughout its length.

    • What is the cauda equina?

    <p>It is the origin of spinal nerves extending inferiorly from the conus medullaris.</p> Signup and view all the answers

    How many pairs of spinal nerves arise from the spinal cord?

    <p>31 pairs</p> Signup and view all the answers

    Which of the following statements about the spinal nerves is incorrect?

    <p>All spinal nerves are sensory nerves.</p> Signup and view all the answers

    Which of the following is NOT a part of the Central Nervous System?

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

    Which division of the Peripheral Nervous System is responsible for voluntary control of skeletal muscles?

    <p>Somatic motor division</p> Signup and view all the answers

    Which of the following structures is NOT a part of the Hindbrain?

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

    Which type of sensory neurons convey information to the CNS from autonomic sensory receptors in the visceral organs?

    <p>Autonomic sensory neurons</p> Signup and view all the answers

    Which of the following is NOT a part of the Forebrain?

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

    What type of nerve fibers conduct impulses from the CNS to smooth muscle, cardiac muscle, and glands?

    <p>Autonomic motor nerve fibers</p> Signup and view all the answers

    Which type of receptors are best at detecting rapidly changing signals?

    <p>Rapidly adapting receptors</p> Signup and view all the answers

    What do nociceptors detect?

    <p>Damage (pain receptors)</p> Signup and view all the answers

    What does the labelled line theory propose regarding sensory information?

    <p>Specific pathways carry sensory information centrally for each stimulus</p> Signup and view all the answers

    Which factor determines the acuity or discriminative touch of a receptor?

    <p>Density of receptors</p> Signup and view all the answers

    Which pathway is associated with discriminative touch sensation and conscious proprioception?

    <p>Posterior White Column-Medial Lemniscal Pathway</p> Signup and view all the answers

    Where does the 2nd neuron in the somatosensory pathway relay information after the dorsal column nuclei?

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

    What is the outermost layer of the meninges?

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

    What is the purpose of the denticulate ligaments?

    <p>To attach the spinal cord to the arachnoid mater and inner surface of the dura mater</p> Signup and view all the answers

    What is the purpose of the filum terminale?

    <p>To anchor the spinal cord to the coccyx</p> Signup and view all the answers

    What is the relationship between the length of the nerve roots and their position along the spinal cord?

    <p>The nerve roots get longer as you go downward</p> Signup and view all the answers

    Where is the typical location for a lumbar puncture?

    <p>Between L3 and L4</p> Signup and view all the answers

    Which spinal nerve root is most commonly associated with herniated discs at L4-L5 and L5-S1 levels?

    <p>L5</p> Signup and view all the answers

    Which of the following is NOT a function of the lateral horn of the gray matter in the spinal cord?

    <p>Contains cell bodies of motor neurons that innervate skeletal muscle</p> Signup and view all the answers

    Which of the following sensory receptors is responsible for detecting high-frequency vibrations?

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

    What is the purpose of the Straight Leg Raise Test (SLR) in the diagnosis of a herniated disc?

    <p>To test for nerve root compression causing radicular pain</p> Signup and view all the answers

    Which of the following is NOT a common symptom of a herniated disc?

    <p>Increased sensitivity to high-frequency vibrations</p> Signup and view all the answers

    What is the function of the meningeal branch of the spinal nerve?

    <p>To provide sensory innervation to the dura mater</p> Signup and view all the answers

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