Question

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what role do the kidneys play in regulating blood pressure?
regulate the amount of oxygen in the bloodstream
filter out waste products from the blood
help regulate the bodys temperature
help maintain balance of fluids and electrolytes in body; can release hormones that cause blood vessels to constrict or dilate
control the production of red blood cells

Explanation:

The kidneys help maintain fluid and electrolyte balance. They release hormones like renin (which affects blood vessel constriction/dilation via the renin - angiotensin - aldosterone system) to regulate blood pressure.

• Regulating oxygen is mainly the lungs' role.
• Filtering waste is a kidney function but not directly related to blood pressure regulation in this context.
• Body temperature regulation is not a primary kidney function for blood pressure.
• Red blood cell production (via erythropoietin) is a kidney function but not for blood pressure regulation.

Answer:

Help maintain balance of fluids and electrolytes in body; can release hormones that cause blood vessels to constrict or dilate