Regulation of blood pressure depends on coordinated responses among the . a. immune, nervous, digestive, and endocrine systems b. circulatory and muscular systems only c. circulatory, nervous, and endocrine systems only d. circulatory, nervous, urinary, and endocrine systems e. circulatory and immune systems only

The correct answer is d. circulatory, nervous, urinary, and endocrine systems

Explanation:

Many organ systems together helps in regulating the blood pressure in the body. For example, in the case of stress, the autonomous nervous system helps in raising the heart rate that increases blood pressure in arteries and veins.

Circulatory system contains blood vessels, blood and heart and heartbeat and blood vessel thickness changes with the change in some endocrine hormone levels like cortisol, adrenalin which regulates the blood pressure.

The urinary system helps in the regulation of blood pressure by filtering water from blood. Therefore circulatory, nervous, urinary, and endocrine systems work together and regulate blood pressure.