Anatomy LE 5: Development of Central Nervous System, Meninges, and Ventricular System
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Questions and Answers

What forms during the 3rd and 4th weeks of pregnancy?

  • The neural tube (correct)
  • The neural crest
  • The brain
  • The spinal cord

    • Which of the following is NOT a derivative of neural crest cells?

  • Muscle cells of the heart (correct)
  • Sympathetic chain and preaortic ganglia
  • Cranial nerve ganglia
  • Dermis in the face and neck

    • What is the function of melanocytes?

  • To produce hormones
  • To form sympathetic chain ganglia
  • To form bones of the skull
  • To produce pigment (correct)

    • Where do Schwann cells originate from?

    <p>Neural crest cells</p> Signup and view all the answers

    Which neural crest derivative is associated with the thyroid gland?

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

    What is the function of the conotruncal septum?

    <p>To separate the heart into left and right sides</p> Signup and view all the answers

    What is the fate of neural crest cells in the pharyngeal arches?

    <p>They form the mesenchyme</p> Signup and view all the answers

    Which of the following is NOT a component of the nervous system that originates from neural crest cells?

    <p>Smooth muscle cells of the gut</p> Signup and view all the answers

    Which of the following is a derivative of the forebrain?

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

    Which part of the brain is derived from the midbrain?

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

    Which of the following is a derivative of the hindbrain?

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

    Which of the following nerves originates from the hindbrain?

    <p>Facial nerve (CN VII)</p> Signup and view all the answers

    Which of the following structures is NOT a derivative of the forebrain?

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

    Which of the following is a derivative of the telencephalon?

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

    What is the term for the grooves that separate the convolutions of the cerebral cortex?

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

    What is the function of arachnoid villi granulations?

    <p>To drain cerebrospinal fluid into the bloodstream</p> Signup and view all the answers

    Which of the following nerves originates from the midbrain?

    <p>Oculomotor nerve (CN III)</p> Signup and view all the answers

    Which of the following is a derivative of the diencephalon?

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

    What is the location of the transverse sinuses?

    <p>Occupying the attached margin of the tentorium cerebelli</p> Signup and view all the answers

    What is the primary function of commissures in the brain?

    <p>To connect the right and left half of the hemispheres</p> Signup and view all the answers

    What is the term for the process by which neuroblasts migrate to the subpial position and differentiate into full mature neurons?

    <p>Cell migration and differentiation</p> Signup and view all the answers

    What is the characteristic of the emissary veins?

    <p>They are valveless</p> Signup and view all the answers

    What is the region of the pallium that forms the hippocampus and paleopallium?

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

    What is the name of the junction of the straight sinus and the superior sagittal sinus?

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

    What do the superior petrosal sinuses drain into?

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

    What is the term for the outer layer of the cerebral hemispheres that develops from the pallium?

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

    What is the characteristic of the motor cortex in terms of cell types?

    <p>It contains a large number of pyramidal cells</p> Signup and view all the answers

    What is the direction of the sigmoid sinus?

    <p>It turns downwards and inferiorly</p> Signup and view all the answers

    What is the term for the period of rapid growth of the cerebral hemispheres during fetal life?

    <p>Final part of fetal life</p> Signup and view all the answers

    What is the name of the structure that continuous with the superior bulb of the internal jugular vein?

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

    What is the potential site of infection?

    <p>The dural venous sinus</p> Signup and view all the answers

    What is the percentage of the cortical structure that is made up of the neocortex?

    <p>90%</p> Signup and view all the answers

    Which structure is responsible for CSF reabsorption?

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

    Where does the sigmoid sinus drain into?

    <p>Internal jugular vein</p> Signup and view all the answers

    What is the function of the superior and inferior ophthalmic veins?

    <p>To drain into the cavernous sinus</p> Signup and view all the answers

    Where is the junction of the falx cerebri and tentorium cerebelli located?

    <p>Lower free margin of falx cerebri</p> Signup and view all the answers

    Which sinus is formed by the union of the great cerebral vein and inferior sagittal sinus?

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

    What is the course of the sigmoid sinus?

    <p>S-shaped course in the temporal and occipital bone</p> Signup and view all the answers

    What is the relationship between the left and right transverse sinuses?

    <p>The left transverse sinus is usually larger</p> Signup and view all the answers

    What is the connection between the cavernous sinus and the transverse sinus?

    <p>Through the petrosal sinus</p> Signup and view all the answers

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