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

4. Tissues & Histology

Introduction to Connective Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Connective Tissue

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Multiple Choice

The extracellular matrix of connective tissue is composed of which of the following substances?

Cholesterol, phospholipids, and triglycerides

Collagen fibers, ground substance, and elastic fibers

Keratin, melanin, and hemoglobin

Actin filaments, myosin, and tropomyosin

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Verified step by step guidance

Understand that the extracellular matrix (ECM) is a key component of connective tissue, providing structural and biochemical support to the surrounding cells.

Recognize that the ECM is primarily composed of protein fibers and a ground substance. The protein fibers include collagen fibers, which provide strength and support, and elastic fibers, which allow for flexibility and elasticity.

Identify the ground substance as a gel-like material that fills the space between cells and fibers in connective tissue. It is composed of water, proteoglycans, and glycoproteins, which help in maintaining the tissue's hydration and nutrient exchange.

Differentiate between the options given: Cholesterol, phospholipids, and triglycerides are components of cell membranes and not typically found in the ECM; Keratin, melanin, and hemoglobin are related to skin, pigmentation, and blood respectively; Actin filaments, myosin, and tropomyosin are involved in muscle contraction.

Conclude that the correct components of the extracellular matrix in connective tissue are collagen fibers, ground substance, and elastic fibers, as these are essential for the structure and function of connective tissues.