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

Almost 75 percent of all parasympathetic outflow travels along the:

trigeminal nerve (cranial nerve V)

spinal accessory nerve (cranial nerve XI)

optic nerve (cranial nerve II)

vagus nerve (cranial nerve X)

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Verified step by step guidance

Step 1: Understand the parasympathetic nervous system, which is part of the autonomic nervous system responsible for 'rest and digest' functions, such as reducing heart rate and promoting digestion.

Step 2: Recall that cranial nerves are paired nerves that emerge directly from the brain and brainstem, and some of them are involved in parasympathetic functions.

Step 3: Learn that the vagus nerve (cranial nerve X) is the primary cranial nerve responsible for parasympathetic outflow to various organs, including the heart, lungs, and digestive tract.

Step 4: Compare the functions of the other cranial nerves listed in the problem: the trigeminal nerve (cranial nerve V) is primarily involved in facial sensation and chewing, the spinal accessory nerve (cranial nerve XI) controls certain muscles in the neck, and the optic nerve (cranial nerve II) is responsible for vision.

Step 5: Conclude that the vagus nerve (cranial nerve X) is the correct answer because it carries almost 75 percent of all parasympathetic outflow to the body.