How does it affect the benefits humans receive from ocean resources?

It adds an additional source of food

Explanation:

As it provides food for fish and other microorganisms

An makes fish healthy for human consumption as an oceanic resource

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these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.