The function of the kidneys is to filter blood and in so doing, maintain blood homeostasis. Toxins and excess materials are removed from the blood to be voided in the urine.
In addition, the kidney is responsive to antidiuretic hormone (ADH) from the posterior lobe of the pituitary gland, and aldosterone from the adrenal cortex. These hormones play a role in regulating body fluid compartments, blood pressure, and electrolyte balance. Furthermore, the kidneys help maintain the pH of the blood.
Sunstroke was a common danger in biblical days (2 Kings 4:18–20). Comment on the role the kidneys play in adjusting electrolyte and fluid balance as a result of sunstroke.
In the Bible, the kidneys are almost always mentioned in conjunction with the heart. Based on our current understanding of anatomy and the function of the kidneys, make a correlation between the kidneys and the cardiovascular system.
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