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

Sympathetic Nervous System

Anatomy & Physiology

14. The Autonomic Nervous System

Sympathetic Nervous System

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Multiple Choice

Which of the following is an action of the sympathetic nervous system?

Decreases respiratory rate

Constricts pupils

Stimulates digestion

Increases heart rate

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Verified step by step guidance

Understand the role of the sympathetic nervous system: It is part of the autonomic nervous system responsible for the 'fight or flight' response, preparing the body for stressful situations.

Identify the physiological changes associated with the 'fight or flight' response: These include increased heart rate, dilation of pupils, and inhibition of digestion, among others.

Analyze each option given in the problem: Decreases respiratory rate, Constricts pupils, Stimulates digestion, and Increases heart rate.

Relate each option to the sympathetic nervous system's actions: Decreasing respiratory rate and stimulating digestion are actions of the parasympathetic nervous system, which promotes 'rest and digest' activities.

Conclude that the correct action of the sympathetic nervous system from the options provided is 'Increases heart rate', as it aligns with the body's preparation for stress or danger.