List six parts of the plant that we eat as vegetables and give one example of each.

Plants typically have six basic parts: roots, stems, leaves, flowers, fruits, and seeds. Vegetables, however, are the roots (carrots), tubers (potato), leaves (spinach), stems (celery), and other bits of plants that you might eat. For a botanist, a vegetable is sort of like the umbrella word for all the edible parts of a plant.

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.