A section through the cerebral hemispheres, hypothalamus, metencephalon and medulla oblongata.
Observe:
1. The rostral part of the medial and lateral striatal ridges.
2. The large arteries in the subarachnoid space.
3. The trigeminal root lateral to the pons area.
4. The tract areas and primordial nuclei.
5. The anterior semicircular canal in the otic capsule.
Keywords: anterior cerebral artery, anterior semicircular canal, area of anterior commissure, area of spinal tract of trigeminal nerve (CN V) and primordial nucleus, basilar artery, cerebral hemisphere, exoccipital bone, hypothalamus, internal carotid artery, lateral striatal ridge, medial striatal ridge, medulla oblongata (myelencephalon), metencephalon (pons region), middle cerebral artery, neopallial cortex, oculomotor nerve (CN III), optic groove, optic tract, otic capsule, perilymphatic space, pre-otic sinus, primordial facial nucleus, primordial hypoglossal nerve (CN XII), primordial piriform cortex (paleopallium), primordial superior olivary nucleus, rhombencoel (fourth ventricle), roof of rhombencoel (fourth ventricle), root of trigeminal nerve (CN V), sigmoid sinus, subarachnoid space, supra-occipital bone, third ventricle, trochlear nerve (CN IV)
Source: Atlas of Human Embryos.