Answers 2024/2025
1. What are the four subdivisions of the brain? - ANS -cerebrum,
diencephalon, brainstem, cerebellum
2. What is gray matter? - ANS -short, nonmyelinated neurons and
cell bodies, some is organized into nuclei.
3. What is white matter? - ANS -myelinated axons
4. How is gray and white matter organized in the spinal cord? - ANS
-Central cavity surround with gray matter in a butterfly shape,
which is surround with white matter
,5. How is gray and white matter organized in the brain? - ANS -
Central cavity surrounded with gray matter. Some nuclei
scattered. outside of cerebrum and cerebellum is covered in gray
matter. Rest is white matter.
6. What are ventricles? - ANS -Spaces in the brain filled with
cerebral spinal fluid and lined with ependymal cells
7. What are the four ventricles of the brain? - ANS -two lateral
ventricles, third ventricle, fourth ventricle
8. What separates the two lateral ventricles? - ANS -septum
pellucidum
,9. Where is the third ventricle located? - ANS -diencephalon
10. Where is the fourth ventricle located? - ANS -between pons
and cerebellum
11. Where are the lateral ventricles located? - ANS -cerebral
hemispheres
12. What connects the third and fourth ventricles? - ANS -
cerebral aqueduct
13. What are the 3 apertures and what do they do? - ANS -2
Lateral apertures & 1 median aperture connect the ventricles to
the subarachnoid space
, 14. What are the lobes of the brain? - ANS -frontal, parietal,
occipital, temporal, insular
15. What separates gyri? - ANS -sulci
16. What separates the precentral and the postcentral gyrus? -
ANS -The Central Sulcus
17. What is the cerebral cortex and what does it do? - ANS -
outer layer of the cerebrum, responsible for conscious behaviour
18. what are the functional areas of the cerebral cortex? - ANS
-Motor, Sensory & Association