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The fornix is a paired structure consisting of bilaterally symmetrical halves composed of longitudinally directed fibers which arch on each side from the region of the uncus to the corpus albicans. Shown is a diagram of the fornix.

Fornix

The fornix is a paired structure consisting of bilaterally symmetrical halves composed of longitudinally…

Diagrammatic profile view of the fornix.

Profile View of Fornix

Diagrammatic profile view of the fornix.

"The Brain is the encephalon, or center of the nervous system and the seat of consciousness and volition in man and the higher animals. Median Longitudinal Section through Head and Upper Part of Neck, to Show relation of Brain to Cranium and the Spinal Cord. <em>c,</em> cerebrum; <em>cb,</em> cerebellum; <em>sc,</em> spinal cord; <em>spc,</em> spinal column; <em>mo,</em> medulla oblongata passing, through foramen magnum, into the spinal cord; <em>pv,</em> pons Varolii; <em>cp,</em> cerebral peduncles or crura cerebri; <em>cqa,</em> anterior corpora quadrigemina; <em>cqp,</em> posterior corpora quadrigemina; <em>pg,</em> pineal gland; <em>pb,</em> pituitary body; <em>cc,</em> corpus collosum, divided transversely; <em>f,</em> fornix; <em>mg,</em> marginal gyrus; <em>gf,</em> gyrus fornicatus; <em>cmg,</em> calloso-marginal suleus; <em>O,</em> occipital lobe; <em>po,</em> parieto-occipital fissure; <em>cf,</em> calcarine fissure; <em>dm,</em>dura mater, separating cerebrum from cerebellum."&mdash;(Charles Leonard-Stuart, 1911)

Human Brain

"The Brain is the encephalon, or center of the nervous system and the seat of consciousness and volition…

"The size of the hemispheres of the brain (A) is so small that they leave exposed the olfactory ganglion (a), the cerebellum (C), and more or less of the optic lobes (B), and they are but partially connected together by the 'fornix' and 'anterior commissure,' the great cerebral commissure known as the 'corpus callosum' being absent." &mdash; Chambers, 1881

Opossum Brain

"The size of the hemispheres of the brain (A) is so small that they leave exposed the olfactory ganglion…

Mesial section through the pituitary region in a child of twelve months old.

Pituitary Region in a Child

Mesial section through the pituitary region in a child of twelve months old.

Mesial section through the pituitary region in an adult.

Pituitary Region in an Adult

Mesial section through the pituitary region in an adult.

Dissection, to show the fornix and the posterior and descending cornua of the lateral ventricle of the left side.

Dissection to Show Ventricle and Fornix

Dissection, to show the fornix and the posterior and descending cornua of the lateral ventricle of the…