Podcast
Questions and Answers
Which of the following ions are regulated by the kidneys in the blood?
Which of the following ions are regulated by the kidneys in the blood?
- Mg2+ and Ca2+
- Na+ and Cl- (correct)
- Fe2+ and Cu2+
- Zn2+ and Mn2+
How do the kidneys regulate blood volume?
How do the kidneys regulate blood volume?
- By increasing blood flow
- By decreasing blood flow
- By conserving water in urine (correct)
- By eliminating water in urine
What is the role of the kidneys in regulating blood pH?
What is the role of the kidneys in regulating blood pH?
- Excreting H+ and conserving HCO3- (correct)
- Excreting HCO3- and conserving H+
- Excreting Na+ and conserving Cl-
- Excreting Cl- and conserving Na+
Which hormone is secreted by the kidneys to help regulate blood pressure?
Which hormone is secreted by the kidneys to help regulate blood pressure?
What is the normal blood osmolarity maintained by the kidneys?
What is the normal blood osmolarity maintained by the kidneys?
Which hormones are produced by the kidneys?
Which hormones are produced by the kidneys?
What are some of the wastes excreted by the kidneys in urine?
What are some of the wastes excreted by the kidneys in urine?
What foreign substances are excreted by the kidneys in urine?
What foreign substances are excreted by the kidneys in urine?
How do the kidneys help maintain homeostasis in the body?
How do the kidneys help maintain homeostasis in the body?
Which of the following is not regulated by the kidneys?
Which of the following is not regulated by the kidneys?
What is the main function of the hormone erythropoietin produced by the kidneys?
What is the main function of the hormone erythropoietin produced by the kidneys?
Which of the following is not a function of the kidneys?
Which of the following is not a function of the kidneys?
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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.
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