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Neuroanatomy Text and Atlas, 4e

Atlas II: Myelin-Stained Sections Through the Central Nervous System

Introduction

Go to the Interactive Neuroanatomy Atlas for an interactive view of myelin-stained sections of the CNS

The atlas of myelin-stained sections through the central nervous system is in three planes: transverse, horizontal, and sagittal. (See Figure 1–17 for schematic views of these planes of sections.) Transverse sections through the cerebral hemispheres and diencephalon are termed coronal sections because they are approximately parallel to the coronal suture. These sections also cut the brain stem, but parallel to its long axis. In addition, three sections are cut in planes oblique to the transverse and horizontal sections.

In this atlas, each level through the central nervous system is printed without labeled structures as well as with labels on an accompanying photograph (printed at reduced contrast to preserve the essence of the structure). Typically, the border of a structure is indicated either when the structure's location is extremely important for understanding the functional consequences of brain trauma or when the structure is clearly depicted on the section and it is didactically important to emphasize the border. Axons of cranial nerves and primary afferent fibers are indicated by bold lines to distinguish them from the other fibers.

FIGURE AII–1

Transverse section of the first sacral segment (S1) and of the spinal cord (×20).

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FIGURE AII–2

Transverse section of the second lumbar segment (L2) of the spinal cord. (×18)

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FIGURE AII–3

Transverse section of the first lumbar segment (L1) of the spinal cord. (×21)

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FIGURE AII–4

Transverse section of the third thoracic segment (T3) of the spinal cord. (×23)

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FIGURE AII–5

Transverse section of the seventh cervical segment (C7) of the spinal cord. (×16)

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FIGURE AII–6

Transverse section of the caudal medulla at the level of the pyramidal (motor) decussation and the spinal (caudal) trigeminal nucleus. (×17)

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FIGURE AII–7

Transverse section of the medulla at the level of the dorsal column nuclei and the somatic sensory decussation. (×12)

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FIGURE AII–8

Transverse section of the medulla through the hypoglossal nucleus. (×9)

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FIGURE AII–9

Transverse section of the rostral medulla through the cochlear nuclei. (×9)

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FIGURE AII–10

Transverse section of the pons at the level of the genu of the facial nerve and the deep cerebellar nuclei. (×4.3)

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FIGURE AII–11

Transverse section of the pons through the main trigeminal sensory nuclei. (×10)

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FIGURE AII–12

Transverse section through the rostral pons (isthmus) at the level of the decussation of the trochlear nerve. (×6)

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FIGURE AII–13

Transverse section of the caudal midbrain at the level of the inferior colliculus. (×5.6)

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FIGURE AII–14

Transverse section of the rostral midbrain at the level of the superior colliculus. (×5.0)

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FIGURE AII–15

Transverse section of the juncture of the midbrain and diencephalon. (×3.3)

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FIGURE AII–16

Coronal section of the diencephalon and cerebral hemisphere through the posterior limb of the internal capsule and the medial and lateral geniculate nuclei. The midbrain and pontine tegmentum, lateral cerebellum, and ventral medulla are also shown. (×2.1)

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FIGURE AII–17

Coronal section of the diencephalon and cerebral hemisphere through the posterior limb of the internal capsule and ventral posterior nucleus. The midbrain tegmentum and base of the pons are also shown. (×2.3)

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FIGURE AII–18

Oblique section of the cerebral hemisphere and diencephalon through the optic chiasm and tracts. (×2.3)

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FIGURE AII–19

Coronal section of the diencephalon and cerebral hemisphere through the posterior limb of the internal capsule and anterior thalamic nuclei. The ventral midbrain and ventral pons are also shown. (×2.2)

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FIGURE AII–20

Coronal section of the cerebral hemisphere and diencephalon through the intraventricular foramen. The base of the pons is also shown. (×2.1)

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FIGURE AII–21

Oblique section of the cerebral hemisphere and diencephalon through the ansa lenticularis and optic tract. (×2.4)

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FIGURE AII–22

Coronal section of the cerebral hemisphere through the anterior limb of the internal capsule, column of the fornix, and amygdala. (×2.2)

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FIGURE AII–23

Coronal section of the cerebral hemisphere through the anterior limb of the internal capsule, anterior commissure, and optic chiasm. (×2.2)

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FIGURE AII–24

Coronal section of the cerebral hemisphere through the anterior limb of the internal capsule and the head of the caudate nucleus. (×2.4)

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FIGURE AII–25

Horizontal section of the cerebral hemisphere and diencephalon through the anterior thalamic nuclei. (×1.9)

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FIGURE AII–26

Horizontal section of the cerebral hemisphere and diencephalon at the level of the anterior commissure. (×1.9)

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FIGURE AII–27

Oblique section of the cerebral hemisphere, diencephalon, brain stem, and cerebellum. (×1.6)

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FIGURE AII–28

Sagittal section of the cerebral hemisphere, diencephalon, brain stem, and cerebellum close to the midline. (×1.9)

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FIGURE AII–29

Sagittal section of the cerebral hemisphere, diencephalon, brain stem, and cerebellum through the mammillothalamic tract and anterior thalamic nucleus. (×1.8)

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FIGURE AII–30

Sagittal section of the cerebral hemisphere, diencephalon, brain stem, and cerebellum through the ventral posterior lateral nucleus and the dentate nucleus. (×1.9)

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FIGURE AII–31

Sagittal section of the cerebral hemisphere and cerebellum through the amygdala and hippocampal formation. (×1.9)

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References

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