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

Parasympathetic innervation of which muscles results in lens accommodation in the eye?

Dilator pupillae muscles

Ciliary muscles

Lateral rectus muscles

Superior rectus muscles

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Verified step by step guidance

Understand the concept of lens accommodation: Lens accommodation refers to the process by which the eye changes the shape of the lens to focus on objects at different distances. This is controlled by the parasympathetic nervous system.

Identify the role of the ciliary muscles: The ciliary muscles are responsible for changing the shape of the lens during accommodation. When these muscles contract, the lens becomes more rounded, allowing the eye to focus on nearby objects.

Clarify the role of parasympathetic innervation: Parasympathetic innervation stimulates the contraction of the ciliary muscles, enabling lens accommodation. This is mediated by the oculomotor nerve (cranial nerve III).

Differentiate the other muscles listed: The dilator pupillae muscles are involved in pupil dilation and are controlled by the sympathetic nervous system, not parasympathetic. The lateral rectus and superior rectus muscles are extraocular muscles responsible for eye movement, not lens accommodation.

Conclude that the ciliary muscles are the correct answer: Based on the function of the ciliary muscles and their parasympathetic innervation, they are the muscles responsible for lens accommodation in the eye.