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

Visceral Reflex Arcs

Anatomy & Physiology

14. The Autonomic Nervous System

Visceral Reflex Arcs

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Multiple Choice

Which of the following visceral reflexes is NOT coordinated by the medulla oblongata?

Vomiting reflex

Defecation reflex

Swallowing reflex

Cardiovascular reflexes

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Verified step by step guidance

Step 1: Understand the role of the medulla oblongata in coordinating visceral reflexes. The medulla oblongata is a part of the brainstem responsible for autonomic functions such as heart rate, breathing, and reflexes like vomiting, swallowing, and cardiovascular regulation.

Step 2: Review the specific reflexes mentioned in the problem. The vomiting reflex, swallowing reflex, and cardiovascular reflexes are all autonomic responses that are coordinated by the medulla oblongata.

Step 3: Consider the defecation reflex. This reflex is primarily controlled by the spinal cord and involves the parasympathetic nervous system, rather than being directly coordinated by the medulla oblongata.

Step 4: Compare the reflexes to identify which one is NOT coordinated by the medulla oblongata. The defecation reflex stands out as it is managed by the spinal cord rather than the medulla oblongata.

Step 5: Conclude that the defecation reflex is the correct answer to the question, as it is not coordinated by the medulla oblongata, unlike the other reflexes listed.