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Summary
DescriptionHuman brain left midsagitttal view closeup description 2.JPG
Human brain left - midsagitttal view - closeup
Corpus callosum, Rostrum
Corpus callosum, Genu
Corpus callosum, Corpus
Corpus callosum, Splenium
Septum pellucidum
Fornix, Corpus
Glandula epiphysialis
Recessus pinealis
Habenula
Stria medullaris thalami
Thalamus (Pars dorsalis)
Adhaesio interthalamica
Plexus choroideus
Foramen interventriculare
Comissura anterior
Hypothalamus
Lamina terminalis
Recessus supraopticus
Recessus infundibuli
Infundibulum
Tuber cinerum
Corpora mamillaria
Sulcus hypothalamicus (blue line)
Mesencephalon (Crus cerebri)
Tegmentum mesencephali
Aqaeductus mesencephali
Tectum mesencephali, a) Colliculus superior B) C. inferior
Pons
Ventriculus quartus
Cerebellum
Comissura posterior
The Thalamus (Diencephalon) is part of the Forebrain and is divided into Dorsal Thalamus (Superior), Hypothalamus (Inferior and Medial) and Subthalamus (Lateral to Hypothalamus).
On a half brain specimen, the Thalamus can be identified. The Thalamus (anteroom) is connected caudally with the midbrain and rostrally with the cerebral hemispheres. Note that the walls of the 3rd ventricle are completely formed by the Thalamus. The Hypothalamic Sulcus separates the Dorsal Thalamus superiorly from the Hypothalamus inferiorly. The subthalamus is located lateral to the hypothalamus and is not visible here.
The anterior wall of the 3rd ventricle is a thin sheet of tissue called the Lamina Terminalis.
In the Dorsal Thalamus note the Interthalamic Adhesion (Massa Intermedia), and the three parts of the Epithalamus: Stria Medullaris Thalami, Habenula, and the Pineal Gland.
The floor of the Hypothalamus is made up of the Infundibulum, which connects with the pituitary gland, and posteriorly, the Tuber Cinereum and Mammillary Body.
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