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

A general characteristic of connective tissue is that it:

has tightly packed cells with little extracellular material

lines body cavities and surfaces

contains an abundant extracellular matrix

is avascular and lacks blood supply

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Verified step by step guidance

Understand the general characteristics of connective tissue: Connective tissue is one of the four primary tissue types in the body, and its main function is to support, bind, and protect other tissues and organs. It is characterized by the presence of an abundant extracellular matrix, which distinguishes it from other tissue types.

Review the concept of extracellular matrix: The extracellular matrix is a network of proteins (like collagen and elastin) and ground substance (like proteoglycans and glycosaminoglycans) that provides structural and biochemical support to surrounding cells. This matrix is a defining feature of connective tissue.

Compare connective tissue to other tissue types: Unlike epithelial tissue, which has tightly packed cells and lines body cavities and surfaces, connective tissue has cells that are more spread out and embedded within the extracellular matrix. This matrix allows connective tissue to perform its supportive functions.

Clarify the vascularity of connective tissue: Most connective tissues are vascular (contain blood vessels), which allows for nutrient and waste exchange. However, some specialized types, like cartilage, are avascular and rely on diffusion for nutrient delivery.

Conclude why the correct answer is 'contains an abundant extracellular matrix': The defining characteristic of connective tissue is its abundant extracellular matrix, which sets it apart from other tissue types. This matrix is essential for its role in support, protection, and connection within the body.