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

19. The Blood Vessels

Introduction to Hemodynamics

Anatomy & Physiology

19. The Blood Vessels

Introduction to Hemodynamics

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Problem 9e

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The kidneys control blood pressure directly through adjustment of blood volume.

Verified step by step guidance

Step 1: Understand the role of the kidneys in regulating blood pressure. The kidneys contribute to blood pressure regulation by controlling blood volume through processes such as filtration, reabsorption, and excretion of water and electrolytes.

Step 2: Analyze the statement provided. The statement claims that the kidneys control blood pressure directly through adjustment of blood volume. Consider whether this is accurate or if there is a more indirect mechanism involved.

Step 3: Recall that the kidneys regulate blood pressure indirectly as well, through the renin-angiotensin-aldosterone system (RAAS). When blood pressure drops, the kidneys release renin, which triggers a cascade leading to vasoconstriction and increased blood volume.

Step 4: Determine whether the statement is true or false based on the information above. If false, correct the statement to reflect the indirect role of the kidneys in blood pressure regulation via RAAS.

Step 5: Rewrite the corrected statement if necessary. For example, 'The kidneys control blood pressure indirectly through adjustment of blood volume and activation of the renin-angiotensin-aldosterone system.'

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Kidney Function in Blood Pressure Regulation

The kidneys play a crucial role in regulating blood pressure by controlling blood volume through the filtration and reabsorption of water and electrolytes. When blood volume increases, blood pressure rises, and vice versa. This process is primarily mediated by the renin-angiotensin-aldosterone system (RAAS), which adjusts blood volume and systemic vascular resistance.

Renin-Angiotensin-Aldosterone System (RAAS)

RAAS is a hormone system that regulates blood pressure and fluid balance. When blood pressure drops, the kidneys release renin, which converts angiotensinogen to angiotensin I. Angiotensin I is then converted to angiotensin II, a potent vasoconstrictor that increases blood pressure and stimulates aldosterone release, promoting sodium and water retention to increase blood volume.

Homeostasis

Homeostasis refers to the body's ability to maintain stable internal conditions despite external changes. In the context of blood pressure, the kidneys contribute to homeostasis by adjusting fluid levels and electrolyte balance, ensuring that blood pressure remains within a normal range. This dynamic balance is essential for overall health and proper organ function.

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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.The kidneys control blood pressure directly through adjustment of blood volume.

Key Concepts

Kidney Function in Blood Pressure Regulation

Renin-Angiotensin-Aldosterone System (RAAS)

Homeostasis

Watch next

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The kidneys control blood pressure directly through adjustment of blood volume.