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

Which of the following is true about the parasympathetic division of the autonomic nervous system?

It is responsible for 'rest and digest' activities.

It uses norepinephrine as its primary neurotransmitter at the effector organ.

It increases heart rate and dilates pupils.

Its preganglionic fibers are shorter than its postganglionic fibers.

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Verified step by step guidance

Step 1: Begin by understanding the parasympathetic division of the autonomic nervous system (ANS). The parasympathetic division is responsible for 'rest and digest' activities, which include conserving energy, slowing the heart rate, and promoting digestion and other metabolic processes.

Step 2: Recall the neurotransmitters used by the parasympathetic division. The primary neurotransmitter at the effector organ is acetylcholine (ACh), not norepinephrine. Norepinephrine is primarily used by the sympathetic division of the ANS.

Step 3: Analyze the physiological effects of the parasympathetic division. It generally decreases heart rate and constricts pupils, which is opposite to the sympathetic division that increases heart rate and dilates pupils during 'fight or flight' responses.

Step 4: Examine the structure of parasympathetic fibers. The parasympathetic division has long preganglionic fibers and short postganglionic fibers, which is the reverse of the sympathetic division.

Step 5: Based on the above clarifications, identify the correct statement about the parasympathetic division. The correct answer is: 'It is responsible for rest and digest activities.'