Question

The body's organ systems work together to maintain homeostasis. Discuss low blood pressure, where to reach homeostasis, it requires multiple (preferably three or more) organ systems to work together to restore balance.

Answer 1

The regulations of blood pressure is done by integration of multiple system. For example-

The nervous system regulate blood pressure by following way- the baroreceptors present at various locations sense the low BP and stimulate nucleus of tractus solitarius. This cause vasodilation of vessels and tachycardia which eventually increases BP.

The renal system regulate BP by renin angiotensin system. The juxtaglomerular apparatus secret renin in response to low BP. This renin with the help of angiotensin 2 cause vasoconstriction in periphery to increase BP.

Endocrine system also regulate BP. For example adrenaline hormone released from adrenal gland cause increase in systolic pressure by increasing force of contraction of heart and cardiac output. This cause increase in BP.