What is glandular system

the endocrine system is the collection of glands that produce hormones that regulates metabolism, growth and development, tissue function, sexual function, reproduction,sleep and mood,then other things.

The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

straight or amphibians are homeothermic to thermal

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.