This is an alternate content page containing a Hot Spot Explore Activity. It has opened in a new window.
The activity has an image with defined hotspot areas. The hotspot areas in the image are labeled as:

Superior Colliculus
Cerebral Aqueduct
Brachium of the Inferior Colliculus
Spinothalamic Tract
Medial Lemniscus
Oculomotor Nerve (CNIII)
Substantia Nigra
Crus Cerebri (Cerebral Peduncle), circled portion is the Corticospinal Tract
Red Nucleus
Cerebellothalamic Tract
Oculomotor Nucleus
Periaqueductal Gray