Neuroanatomy Draw It To Know It

23. Eye Movements 423

DRAWING 23-6 Pupillary Light Refl e x

Short ciliary nerve

Sphincter pupillae

muscle

Ciliary ganglion

Lateral

geniculate

nucleus

Red

nucleus

Pretectal olivary nucleus

of the pretectal area

Posterior commissure

Optic tract

Edinger-Westphal

nucleus

CrN III, para-

sympathetic fiber

Superior colliculus

Iris

Pupil

Sphincter pupillae

Dilator muscle

CORONAL VIEW

DIENCEPHALON & MIDBRAIN -

SAGITTAL VIEW

AXIAL VIEW