Examlex
The orbits of comets are
Sympathetic Nerve
A part of the autonomic nervous system that generally stimulates the body's fight or flight response.
Capillaries
The smallest blood vessels in the body, responsible for the exchange of water, oxygen, carbon dioxide, and other nutrients and waste substances between blood and tissues.
Venules
Small blood vessels that drain blood from capillaries and transport it to larger veins.
Arterioles
Small branches of arteries leading to capillaries, responsible for controlling blood flow and blood pressure by constricting or dilating.
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