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 of the following correctly lists the layers of a typical artery from innermost to outermost?

Tunica externa, tunica intima, tunica media

Tunica media, tunica intima, tunica externa

Tunica media, tunica externa, tunica intima

Tunica intima, tunica media, tunica externa

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Verified step by step guidance

Understand the structure of a typical artery: Arteries are composed of three layers, each with distinct functions and characteristics. These layers are organized from the innermost to the outermost.

Identify the innermost layer: The tunica intima is the innermost layer of an artery. It consists of endothelial cells that line the lumen of the artery, providing a smooth surface to reduce friction for blood flow.

Identify the middle layer: The tunica media is the middle layer of an artery. It is primarily composed of smooth muscle and elastic fibers, allowing the artery to regulate blood pressure and flow by contracting or relaxing.

Identify the outermost layer: The tunica externa (also called tunica adventitia) is the outermost layer of an artery. It is made of connective tissue that provides structural support and anchors the artery to surrounding tissues.

Combine the layers in order: From innermost to outermost, the layers of a typical artery are organized as follows: tunica intima, tunica media, tunica externa.