Sheep Brain Quiz

1. Damage near the point where the brain joins the spinal cord disrupts basic respiratory and cardiovascular regulation. Which structure is most directly implicated?

2. While viewing the ventral surface, you notice paired elongated structures at the most anterior end of the brain. What are they?

3. A student is orienting an intact sheep brain. Which structure should be located posterior to the cerebrum and dorsal to much of the brainstem?

4. A specimen has had its tough outer covering and thinner underlying coverings removed before the brain is examined. What collective structures were removed?

5. Compared with the human brain, which feature is generally proportionally more prominent in the sheep brain?

6. A small endocrine structure is seen projecting from the ventral surface beneath the hypothalamic region. Which structure is it?

7. During external examination, which deep groove best marks the boundary between the cerebrum and cerebellum?

8. What is the main anatomical advantage of the gyri and sulci covering the cerebral surface?

9. A sheep turns its head toward a sudden movement in its visual field. Which paired dorsal midbrain structures help coordinate this visual orienting response?

10. Which part of the brainstem narrows caudally and becomes continuous with the spinal cord?

11. A student traces sensory information toward the cerebral cortex and identifies a central relay region in the diencephalon. Which structure has this role for many sensory pathways?

12. On a midsagittal section, a thick C-shaped band of white matter arches above the diencephalon and connects the cerebral hemispheres. What is it?

13. On the ventral surface, a student finds an X-shaped region associated with the visual pathways. What structure has been identified?

14. A midsagittal cut through the cerebellum reveals a tree-like branching pattern of white matter. What is this pattern called?

15. A groove runs along the dorsal midline and divides the cerebrum into left and right halves. What is it?

16. On a fresh section through the cerebrum, how is cerebral white matter typically positioned relative to cortical gray matter?