True.
Except for the substantial parasympathetic vasodilator supply to the vaginal arterioles, arteries do not have much parasympathetic innervation.
A microcirculation blood vessel with a small diameter known as an arteriole extends and branches from an artery to lead to capillaries.
The main site of vascular resistance is found in arterioles, which have muscular walls with typically only one to two layers of smooth muscle cells. The transition from arterioles to capillaries is where blood pressure and blood flow velocity vary the most.
Arterioles are innervated by the autonomic nervous system and respond to different circulating hormones to control their diameter. A functioning sympathetic innervation does not exist in retinal vessels.
Learn more about arterioles here:
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