Brain Explorer
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Brain Stem

Life-sustaining autonomic functions and consciousness arousal.

Brain Stem — brain MRI

© Blausen Medical Communications · CC-BY

The brain stem connects the cerebrum to the spinal cord and comprises the midbrain, pons, and medulla oblongata. It controls vital autonomic functions: heart rate, breathing, blood pressure, and sleep-wake cycles through the reticular activating system. Cranial nerve nuclei in the brain stem mediate vision, hearing, facial sensation, swallowing, and eye movements. Brain stem strokes can be life-threatening.

Functions

Vital functionsSleep-wake cyclesHeart rateBreathingConsciousness arousal

Gallery

Brain stem

Brain stem

MRI

MRI

Brain

Brain

Videos

2-Minute Neuroscience: Brainstem

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Brain Stem Anatomy

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