399
CHAPTER ELEVEN
Nervous System II
2.
Parietal lobe.
The parietal lobe is posterior to the frontal
lobe and is separated from it by the central sulcus.
3.
Temporal lobe.
The temporal lobe lies inferior to the
frontal and parietal lobes and is separated from them by
the lateral sulcus.
1.
Frontal lobe.
The frontal lobe forms the anterior portion
of each cerebral hemisphere. It is bordered posteriorly
by a
central sulcus
(F
ssure of Rolando), which passes
out from the longitudinal F
ssure at a right angle, and
inferiorly by a
lateral sulcus
(F
ssure of Sylvius), which
exits the undersurface of the brain along its sides.
Skull
Meninges
Cerebrum
Diencephalon
Brainstem
(a)
Sulcus
Gyrus
Corpus
callosum
Fornix
Cerebellum
Spinal cord
Midbrain
Pons
Medulla
oblongata
Corpus
callosum
Cerebrum
Diencephalon
Midbrain
Pons
Medulla oblongata
Spinal cord
Cerebellum
Transverse fissure
Fornix
(b)
FIGURE 11.15
Sagittal section of brain. (
a
) The major portions of the brain include the cerebrum, the diencephalon, the cerebellum, and the
brainstem. (
b
) Photo of human brain.
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