Multiple Choice
The spinal cord is continuous with the ______.
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12. The Central Nervous System
Introduction to the Central Nervous System
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Which term refers to a shallow groove on the surface of the cerebral cortex?
A
Ventricle
B
Gyrus
C
Sulcus
D
Fissure
Verified step by step guidance1
Understand the anatomy of the cerebral cortex: The cerebral cortex is the outermost layer of the brain, responsible for higher brain functions such as thought, memory, and voluntary movement. Its surface is not smooth but has grooves and ridges to increase surface area.
Learn the terminology: The surface of the cerebral cortex has three main features: gyri (ridges), sulci (shallow grooves), and fissures (deep grooves). Each term describes a specific type of structure.
Differentiate between sulcus and fissure: A sulcus is a shallow groove on the surface of the cerebral cortex, while a fissure is a deeper groove that often separates larger brain regions.
Eliminate incorrect options: Ventricle refers to fluid-filled cavities in the brain, not grooves. Gyrus refers to the ridges, not grooves. Fissure refers to deep grooves, not shallow ones.
Conclude that the correct term for a shallow groove on the surface of the cerebral cortex is 'sulcus'.
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