Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

25. The Urinary System

The Kidneys

Anatomy & Physiology

25. The Urinary System

The Kidneys

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Multiple Choice

The kidneys secrete hormones that help with which of the following functions?

Synthesizing vitamin D

Producing bile

Digesting carbohydrates

Regulating blood pressure

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Verified step by step guidance

Understand the role of the kidneys in the endocrine system. The kidneys are not just involved in filtering blood and producing urine; they also secrete hormones that have systemic effects.

Identify the hormones secreted by the kidneys. The primary hormone related to blood pressure regulation is renin, which is part of the renin-angiotensin-aldosterone system (RAAS).

Explore the function of renin. Renin is an enzyme that initiates a cascade leading to the production of angiotensin II, a potent vasoconstrictor that increases blood pressure.

Consider the role of angiotensin II. Angiotensin II stimulates the secretion of aldosterone from the adrenal glands, which increases sodium and water reabsorption in the kidneys, further contributing to blood pressure regulation.

Conclude that the kidneys play a crucial role in regulating blood pressure through the secretion of renin, which is part of the RAAS pathway, affecting systemic vascular resistance and fluid balance.