User:Yanping Nora Soong/M1/neuroanatomy
Forebrain
[edit]Midbrain and basal ganglia
[edit]General vasculature and organization
[edit]The cerebral aqueduct divides the midbrain into dorsal and ventral portions.
Hindbrain
[edit]Oculomotor nerve (III)
[edit]- Brainstem nucleus:
- Edinger–Westphal nucleus (parasympathetic pre-ganglionic neuron cell bodies that synapse onto the ciliary ganglion)
- Contributes the autonomic, parasympathetic component to the oculomotor nerve; ultimately innervating iris sphincter muscle and ciliary muscle
- Oculomotor nucleus - general somatic efferent fibers to the levator palpebrae superioris muscle, superior rectus muscle, inferior rectus muscle, medial rectus muscle and inferior oblique muscle
- Edinger–Westphal nucleus (parasympathetic pre-ganglionic neuron cell bodies that synapse onto the ciliary ganglion)
Neural tracts (ascending and descending)
[edit]