Brain & Cranial Nerves - Lone Star College · Olfactory bulb Olfactory Cranial Nerves Olfactory (l) tract Optic (Il) Optic tract Oculomotor Trochlear (IV) Vestibulo- cochlear Trigeminal

Brain & Cranial Nerves

By

Michael J. Harman

Cerebrum

Cerebral hemispheres

Corpus callosum

Cerebral cortex – gray matter Outer covering of the cerebrum

White matter

Convolution (gyri)

Precentral gyrus (motor)

Postcentral gyrus (sensory)

Central sulcus

Lateral sulcus

Longitudinal fissure

Transverse fissure

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Frontal lobe

Parietal lobe

Temporal lobe

Occipital lobe

Insula

Ventricles

Lateral ventricles

Third ventricle

Fourth ventricle

Choroid plexus

Diencephalon

Includes: - Thalamus - Hypothalamus - Infundibulum - Pituitary Gland - Optic Chiasma - Mammillary Bodies

Thalamus

Hypothalamus

Infundibulum

Connects pituitary gland to brain

Pituitary gland

Optic chiasma

Mammilary bodies

Cerebellum

Arbor vitae: tree-like pattern

Brain stem

Includes: - Midbrain - Pons - Medulla Oblongata

Midbrain

Includes: - Cerebral peduncles - Corpora Quadrigemina

Cerebral peduncles

Corpora quadrigemina*

Pons

Medulla oblongata

Cranial Nerves

• I – Olfactory • II – Optic • III – Oculomotor • IV – Trochlear • V – Trigeminal • VI – Abducens

• VII – Facial • VIII – Auditory • IX – Glossopharyngeal • X – Vagus • XI – Accessory • XII - Hypoglossal

Cranial Nerves