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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which part of the ear is the first to vibrate when a sound wave enters the ear?

Hammer

Anvil

Cochlea

Eardrum

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Verified step by step guidance

Step 1: Understand the anatomy of the ear and the pathway of sound waves. Sound waves travel through the external ear and reach the eardrum, which is also known as the tympanic membrane.

Step 2: Learn the function of the eardrum. The eardrum is a thin membrane that vibrates in response to sound waves. These vibrations are the first mechanical response to sound entering the ear.

Step 3: Recognize the sequence of structures involved in sound transmission. After the eardrum vibrates, the vibrations are transmitted to the ossicles (hammer, anvil, and stirrup) in the middle ear.

Step 4: Clarify the roles of the hammer, anvil, and cochlea. The hammer and anvil are part of the ossicles that amplify the vibrations, while the cochlea in the inner ear converts these vibrations into neural signals.

Step 5: Conclude that the eardrum is the first structure to vibrate when a sound wave enters the ear, initiating the process of hearing.