A human couple has a baby with blood type A. The mother is blood type AB, and the father has blood type B. This is an example of what type of inheritance?

Co-dominant

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.