This is the head of the sensory system below the cortex. It receives sensory input form all parts of the body and passes them via the thalamic radiations into the sensory cortex. It is connected to various parts of the brain and spinal cord. So we have connection to the spinal cord via the spinothalamic tracts. It is connected to the cerebellum via the cerebello-rubro-thalamic tract. The cerebellar part of this tract passes into the superior cerebellar peduncle.

It is connected to the basal ganglia via the thalamostriate tract which interconnects the thalamus with the striatum.


Diencephalon audio




Coronal section through fixed brain at level of upper brain stem: 1 cortex 2 caudate nucleus 3 cerebral 'medulla' 4 corpus callosum 5 cingulate gyrus 6 fornix column 7 thalamus 8 internal capsule 9 lentiform nucleus 10 extreme capsule 11 claustrum 12 external capsule 13 insular cortex 14 3rd ventricle


Axial MRI showing diencephalon and other close structures
Roll over mouse to label

Dissect the thalamus



There is nothing in anatomy not found in this website

Electronic School of Medicine
Creator: Oluwole Ogunranti

Short brain video
Diencephalon  in Scene 5 DIGITAL LOCATOR OF DIENCEPHALON: Scene 1-Brain -inferior surface. Scene 2 Expand brainstem. Scene 3, Brain -medial view -midsagittal section. Scene 4 Remove midbrain. Scene 5 Lateral view of brainstem. Rollover mouse to label and click to display page, Click blinking end page to display diencephalon page.









Brainstem Medulla Pons Midbrain Thalamus Epithalamus
Basal ganglia Forebrain Temporal lobe Cerebral operculum Remove operculum Wall of lateral ventricle 1
Wall of lateral ventricle 2 Wall of lateral ventricle 3 lateral ventricle 1 lateral ventricle 2 Base of brain Rhomboid fossa










DIGITAL LOCATOR OF THALAMUS approached  from opercular dissection.  Layer 1 Remove meninges. Remove temporal operculum. Wlyaer 2: Widen operculum. Layer 3 Remove frontal block.. Layer 4. remove insular gyraLayer 5 Remove extreme capsule. Layer 6 Remove lentiform nucleus. RLayer 7 Remove lateral ventricle. Layer 8 Remove internal capsule. Layer 9 Remove caudate nucleus. Layer 10 Remove occipital block (expose thalamus). Layer 11 Widen lateral ventricle  and expose body of caudate nucleus..Layer 12 Expose 3rd ventricle. Thalamus is localised to layer 12. Roll over mouse to label , click to disply page and click blinking end page to display thalamus page Thalamus is localised to to layer 12.




Cell Biology

Gross anatomy
Lymphatic drainage
Organ integration
Clinical anatomy





Chemical Pathology

Anatomical Pathology




Diencephalon embryology

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