The document provides an overview of various anatomical structures and pathways within the brainstem, including the midbrain, pons, and medulla oblongata. It details several important tracts and nuclei involved in sensory and motor functions, such as the corticospinal and spinothalamic tracts. The information is essential for understanding the organization and functions of the brainstem in the nervous system.

1. BRAINSTEM ANTERIOR SURFACE

2. BRAINSTEM POSTERIOR SURFACE

3. MIDBRAIN SUPERIOR COLLICULUS
Stratum opticum of
superior colliculus

4. MIDBRAIN INFERIOR COLLICULUS

5. MIDBRAIN INFERIOR COLLICULUS
Cerebral aqueduct
Central
(periaqueductal) gray
Lateral lemniscus
Trochlear nucleus
Inferior colliculus
nucleus
Reticular formation
Spinothalamic and
spinotectal tract
Central tegmental tract
Medial longitudinal
fasciculus
Parieto-temporo-occipito
pontine fibers of crus cerebri
Decussation of superior
cerebellar peduncle
Rubrospinal tract
Medial lemniscus
Trigeminothalamic tract
Substantia nigra
Corticospinal and corticobulbar
fibers of crus cerebri
Frontopontine fibers
of crus cerebri

6. PONS

7. MEDULLA OPEN

8. MEDULLA OBLONGATA PYRAMIDAL DECUSSATION

9. MEDULLA OBLONGATA POSTERIOR COLUMN NUCLEUS
Solitary tract nucleus
Dorsal motor nucleus of
vagus nerve
Hypoglossal nucleus
Medial lemniscus
Medial longitudinal fasciculus
Fasciculus gracilis
Nucleus gracilis
Nucleus cuneatus
Fasciculus cuneatus
Accessory cuneate nucleus
Dorsal spinocerebellar tract
Spinal nucleus of
trigeminal nerve
Ventral spinocerebellar tract
Lateral reticular
nucleus
Spinothalamic and
spinotectal tracts
Accessory nucleus of
inferior olive
Corticospinal and
corticobulbar fibers in
the pyramid
Reticular formation
Central
(periaqueductal) gray
Ventral median
fissure
Dorsal median
fissure
Tectospinal tract
Internal arcuate fibers

10. MEDIAL OBLONGATA MEDIAL DECUSSATION

11. MEDULLA MEDIAL LEMNISCUS DECUSSATION
Solitary tract nucleus
Dorsal motor nucleus of
vagus nerve
Hypoglossal nucleus
Medial lemniscus
Medial longitudinal fasciculus
Fasciculus gracilis
Nucleus gracilis
Nucleus cuneatus
Fasciculus cuneatus
Accessory cuneate nucleus
Dorsal spinocerebellar tract
Spinal nucleus of
trigeminal nerve
Ventral spinocerebellar tract
Lateral reticular
nucleus
Spinothalamic and
spinotectal tracts
Accessory nucleus of
inferior olive
Corticospinal and
corticobulbar fibers in
the pyramid
Reticular formation
Central
(periaqueductal) gray
Dorsal median
fissure
Tectospinal tract
Rubrospinal tract
Internal arcuate fibers