12 Questions
Which of the following ions are regulated by the kidneys in the blood?
Na+ and Cl-
How do the kidneys regulate blood volume?
By conserving water in urine
What is the role of the kidneys in regulating blood pH?
Excreting H+ and conserving HCO3-
Which hormone is secreted by the kidneys to help regulate blood pressure?
Renin
What is the normal blood osmolarity maintained by the kidneys?
300 mOsm/liter
Which hormones are produced by the kidneys?
Calcitriol and erythropoietin
What are some of the wastes excreted by the kidneys in urine?
Ammonia and urea
What foreign substances are excreted by the kidneys in urine?
Drugs and environmental toxins
How do the kidneys help maintain homeostasis in the body?
All of the above
Which of the following is not regulated by the kidneys?
Blood glucose levels
What is the main function of the hormone erythropoietin produced by the kidneys?
Stimulating red blood cell production
Which of the following is not a function of the kidneys?
Digesting food
Study Notes
- Kidneys regulate blood ionic composition (Na+, K+, Ca2+, Cl-, HPO42-)
- Kidneys regulate blood volume by conserving or eliminating water in urine
- Kidneys regulate blood pH by excreting H+ and conserving HCO3-
- Kidneys help regulate blood pressure by secreting renin
- Kidneys maintain blood osmolarity close to 300 mOsm/liter
- Kidneys produce hormones calcitriol and erythropoietin
- Kidneys excrete wastes and foreign substances in urine
- Wastes include ammonia, urea, and bilirubin
- Foreign substances include drugs and environmental toxins
- Kidneys play a vital role in maintaining homeostasis in the body.
Test your knowledge on the vital role of kidneys in maintaining homeostasis in the body! This quiz covers various functions of the kidneys, including regulation of blood ionic composition, pH, volume, and pressure, as well as production of hormones and elimination of wastes and foreign substances. Sharpen your understanding of the intricacies of kidney function with this informative quiz.
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