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

14. The Autonomic Nervous System

Introduction to the Autonomic Nervous System

Anatomy & Physiology

14. The Autonomic Nervous System

Introduction to the Autonomic Nervous System

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Multiple Choice

The sympathetic axons extend to which blood vessels of the kidney?

Afferent arterioles

Renal veins

Glomerular capillaries

Peritubular capillaries

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Verified step by step guidance

Step 1: Begin by understanding the role of the sympathetic nervous system in regulating blood flow to the kidney. Sympathetic axons are part of the autonomic nervous system and primarily influence vasoconstriction and blood pressure regulation.

Step 2: Recall the anatomy of the kidney's blood vessels. The kidney receives blood through the renal artery, which branches into smaller vessels, including afferent arterioles, glomerular capillaries, and peritubular capillaries. The renal veins are responsible for draining blood from the kidney.

Step 3: Focus on the afferent arterioles. These vessels are responsible for delivering blood to the glomerulus for filtration. Sympathetic axons innervate the afferent arterioles to regulate blood flow and filtration rate by causing vasoconstriction during stress or low blood pressure.

Step 4: Consider the other options. Sympathetic axons do not directly innervate renal veins, as these are primarily involved in draining blood. Similarly, glomerular capillaries and peritubular capillaries are not directly influenced by sympathetic axons for vasoconstriction; their function is more related to filtration and reabsorption processes.

Step 5: Conclude that the correct answer is afferent arterioles, as these are the blood vessels of the kidney that are directly influenced by sympathetic axons to regulate blood flow and filtration.