Why do you think spacecraft that carry instruments to collect data about objects in space are called probes

check for the pregnancy rating of drug. if its class c or d see if other alternatives

easy

explanation:

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.