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 Directional Terms

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

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Multiple Choice

Which is the next structure to contact air after it passes from the nose to the nasal cavity?

Trachea

Pharynx

Larynx

Bronchi

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Verified step by step guidance

Begin by understanding the pathway of air as it enters the respiratory system. Air first enters through the nose, where it is filtered, warmed, and humidified.

After passing through the nose, air moves into the nasal cavity. The nasal cavity is lined with mucous membranes and tiny hairs called cilia that help trap particles and pathogens.

Next, air travels from the nasal cavity to the pharynx. The pharynx is a muscular tube that serves as a passageway for both air and food. It is divided into three regions: nasopharynx, oropharynx, and laryngopharynx.

From the pharynx, air continues its journey into the larynx. The larynx, also known as the voice box, is responsible for sound production and also acts as a passageway for air to enter the lower respiratory tract.

Finally, air moves from the larynx into the trachea, which is a tube that connects the larynx to the bronchi, leading to the lungs. The trachea is reinforced with cartilage rings to maintain its structure and ensure unobstructed airflow.