202 DR 4 Neuroanat 1 Organisation of the central nervous system1_Master

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Questions and Answers

Which of the following is true about the cervical and lumbosacral enlargements?

  • They are regions of the brain responsible for memory and learning.
  • They are regions of the spinal cord responsible for sensory perception.
  • They are regions of the brain that control motor functions.
  • They are regions of the spinal cord that innervate the upper and lower limbs. (correct)

What can be found in the dorsal roots of the spinal cord?

  • Connective tissue
  • Sensory (afferent) nerve fibers (correct)
  • Blood vessels
  • Motor (efferent) nerve fibers

What is the function of the ventral roots of the spinal cord?

  • To transmit sensory information to the brain
  • To control voluntary muscle movements (correct)
  • To regulate body temperature
  • To produce cerebrospinal fluid

What is the role of the anterior median fissure in the spinal cord?

<p>To provide a division between the left and right sides of the spinal cord (A)</p> Signup and view all the answers

What is the purpose of the meninges?

<p>To protect the spinal cord (A)</p> Signup and view all the answers

What are the main components of the cerebellum?

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

What can be found in the ventral surface of the brain?

<p>Structures responsible for motor control (C)</p> Signup and view all the answers

Which nerve fibers pass through the thoracic ventral roots?

<p>Preganglionic sympathetic nerve fibers (A)</p> Signup and view all the answers

Which roots form the cauda equina?

<p>Lumbar and sacral dorsal roots (D)</p> Signup and view all the answers

What forms the caudal end of the spinal cord?

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

What is the dura?

<p>The outer layer of the meninges (A)</p> Signup and view all the answers

What is the main function of cerebrospinal fluid?

<p>Acts as a hydraulic buffer to cushion the brain against trauma (A)</p> Signup and view all the answers

Where is a lumbar puncture usually performed in adults and children?

<p>Between L3 and L4 vertebrae (B)</p> Signup and view all the answers

What do the dorsal root ganglia contain?

<p>The cell bodies of primary sensory neurons (B)</p> Signup and view all the answers

Q1. What is the function of the middle meningeal artery?

<p>To supply most of the dura (D)</p> Signup and view all the answers

Q2. What separates the two cerebral hemispheres?

<p>The falx cerebri (A)</p> Signup and view all the answers

Q3. What is the function of the arachnoid granulations?

<p>To drain excess cerebrospinal fluid into the venous system (D)</p> Signup and view all the answers

Q4. Where is the transverse sinus located?

<p>Along the superior border of the falx cerebri (B)</p> Signup and view all the answers

Q5. What is the clinical significance of the cavernous sinus?

<p>It is a potential route of infection from extracranial to intracranial sites (B)</p> Signup and view all the answers

Q6. What sensory information is processed in the parietal lobe?

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

Q7. What is the function of the central sulcus?

<p>To contain primary motor and sensory cortices (D)</p> Signup and view all the answers

Which area of the brain is situated within the inferior wall of the lateral sulcus?

<p>Primary auditory area (A)</p> Signup and view all the answers

Which area of the brain lies deep to the lateral sulcus and cannot be seen unless the lips of the sulcus are parted?

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

Which cranial nerve is responsible for relaying olfactory information to the brain?

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

Which structure connects the mammillary bodies to the hippocampus?

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

What is the main function of the cerebellum?

<p>Control of posture (A)</p> Signup and view all the answers

What separates the anterior and posterior lobes of the cerebellum?

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

What connects the posterior aspect of the brainstem to the cerebellum?

<p>Inferior cerebellar peduncle (D)</p> Signup and view all the answers

What is the largest part of the hindbrain?

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

What is the main relay station in olfactory pathways?

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

Q1. What is the function of the pia mater?

<p>To closely invest the brain (D)</p> Signup and view all the answers

Q2. What artery supplies most of the dura?

<p>Middle meningeal artery (C)</p> Signup and view all the answers

Q3. What is the function of the falx cerebri?

<p>To separate the two cerebral hemispheres (D)</p> Signup and view all the answers

Q4. What bone is the tentorium cerebelli attached to?

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

Q5. What is the function of the arachnoid granulations?

<p>To drain excess cerebrospinal fluid into the venous system (A)</p> Signup and view all the answers

Q6. What is the clinical significance of the cavernous sinus?

<p>It is a potential route of infection from extracranial to intracranial sites (A)</p> Signup and view all the answers

Q7. What sensory information is processed in each of the lobes?

<p>Touch, pain, and limb position in the parietal lobe, visual processing in the occipital lobe, speech and memory in the temporal lobe (A)</p> Signup and view all the answers

Which area of the brain is situated within the inferior wall of the lateral sulcus?

<p>Primary auditory area (B)</p> Signup and view all the answers

What is the main relay station in olfactory pathways?

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

What connects the mammillary bodies to the hippocampus?

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

What is the largest part of the hindbrain?

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

What are the main functions of the cerebellum?

<p>Control of posture, coordinating limb movements, control of eye movements (B)</p> Signup and view all the answers

What connects the posterior aspect of the brainstem to the cerebellum?

<p>Superior cerebellar peduncle (D)</p> Signup and view all the answers

Which lobes of the cerebellum are separated by the primary fissure?

<p>Anterior and posterior lobes (C)</p> Signup and view all the answers

What connects the hypothalamus to the pituitary gland?

<p>Pituitary stalk (C)</p> Signup and view all the answers

What lies deep to the lateral sulcus and can only be seen when the lips of the sulcus are parted?

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

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