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

13. The Peripheral Nervous System

Introduction to Sensory Receptors

Anatomy & Physiology

13. The Peripheral Nervous System

Introduction to Sensory Receptors

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Multiple Choice

What is the primary function of the outer ear?

To collect and direct sound waves into the ear canal

To amplify vibrations from the middle ear to the inner ear

To equalize air pressure on both sides of the eardrum

To convert sound waves into electrical signals

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Verified step by step guidance

Step 1: Understand the anatomy of the outer ear. The outer ear consists of the pinna (auricle) and the external auditory canal. Its structure is designed to collect sound waves from the environment.

Step 2: Recognize the primary function of the outer ear. The outer ear's main role is to gather sound waves and funnel them into the ear canal, where they travel toward the eardrum.

Step 3: Differentiate the functions of other parts of the ear. The middle ear amplifies vibrations, the inner ear converts sound waves into electrical signals, and the Eustachian tube equalizes air pressure on both sides of the eardrum.

Step 4: Eliminate incorrect options based on the anatomy and physiology of the ear. For example, amplification and conversion of sound waves are functions of the middle and inner ear, not the outer ear.

Step 5: Conclude that the correct answer is the option describing the outer ear's role in collecting and directing sound waves into the ear canal.