Neuronal Signaling and the Structure of the Nervous System
175
Figure 6–38
The surface of the cerebral cortex and the divisions of
the brain shown in sagittal section. The outer surface
of the cerebrum (cortex) is divided into four lobes as
shown.
Forebrain
Cerebrum
Diencephalon
Brainstem
Midbrain
Pons
Medulla
oblongata
Cerebellum
Corpus
callosum
Spinal cord
Frontal lobe
Temporal
lobe
Occipital
lobe
Parietal lobe
Figure 6–39
Frontal section of the forebrain showing interior
structures and the six-layer organization of the
cerebral cortex.
Layers
1
2
3
4
5
6
Gray
matter
White matter
Pyramidal
cell
Cerebrum
Lateral ventricle
Third ventricle
Hypothalamus
Thalamus
Pituitary gland
Corpus callosum
Basal nuclei
Sulcus
Gyru
s
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