The cerebral hemispheres are:
A. Divided by the central sulcus.
B. Subdivided into four lobes per hemisphere.
C. Composed primarily of gray matter, with an outer layer of white matter.
D. Connected by the corpus callosum and anterior commissure.
ANS: D
Rationale: The longitudinal fissure divides the two cerebral hemispheres, and each hemisphere can be subdivided into a total of six lobes: frontal, parietal, temporal, occipital, limbic, and insular. The surface of the cerebrum is composed of gray matter, with underlying white matter deep to this. The corpus callosum connects the majority of the left and right cerebral hemispheres, with the anterior commissure connecting the left and right temporal cortices.
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