中腦內有四疊體、紅核、黑質，黑質其主要分泌多巴胺，而四疊體又分上丘為瞳

中腦內有四疊體、紅核、黑質，黑質其主要分泌多巴胺，而四疊體又分上丘為瞳孔光反射中樞，下丘則是聽覺反射中樞，並發出腦神經中的動眼神經及滑車神經。

結果 (英文) 1:

There quadrigeminal intracerebral, red nucleus, substantia nigra, substantia nigra main secrete dopamine, and quadrigeminal colliculus divided light reflective pupil center, is inferior colliculus auditory reflex center, and issued in the brain REM nerve and nerve tackle.

結果 (英文) 2:

There are four groups in the brain, red core, black matter, black matter it mainly secretes dopamine, and the quadrist body is divided into the upper hill for the pupil light reflection center, the lower hill is the auditory reflection center, and emits the nerve nerve in the brain and the eye and carriage nerve.

結果 (英文) 3:

In the midbrain, there are the Triassic, the red nucleus and the substantia nigra. The substantia nigra mainly secretes dopamine, while the upper colliculus is the pupil light reflex center, the lower colliculus is the auditory reflex center, and sends out the oculomotor nerve and the trochlear nerve in the brain nerve.