Which of the following is not true regarding the endocrine system? They release their hormones directly into the blood.

All of the organs and glands of the endocrine system are influenced by the pituitary gland.

They release substances called hormones.

Their hormones regulate specific body functions.

c. movement because i took the test and it lets me review my answers

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )

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.  

answer increasing the intensity, duration,and frequency of exercise progressively;