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When REM-on neurons are active and acetylcholine levels are high, the characteristic signs of REM sleep emerge.
Internal Carotid Artery
A principal blood vessel that delivers blood to the brain, eyes, and additional areas of the head.
Radial Artery
A major artery in the forearm that supplies blood to the lateral aspect of the hand and the thumb.
Coronary Artery
An artery supplying blood to the heart muscle itself, essential for providing oxygen and nutrients.
Subclavian Artery
A major artery that supplies blood to the thorax, upper limbs, and head.
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