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

Which of the following best describes the ground substance found in the matrix of typical connective tissue?

A layer of tightly packed epithelial cells

A rigid, calcified structure made primarily of hydroxyapatite crystals

A network of contractile fibers responsible for movement

An amorphous, gel-like material composed mainly of water, proteoglycans, and glycoproteins

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Verified step by step guidance

Step 1: Understand the concept of ground substance in connective tissue. Ground substance is the non-cellular component of the extracellular matrix that fills the spaces between cells and fibers in connective tissue.

Step 2: Recognize the composition of ground substance. It is primarily composed of water, proteoglycans (which are proteins with attached glycosaminoglycans), and glycoproteins. These components help provide structural support and mediate biochemical interactions.

Step 3: Eliminate incorrect options based on their descriptions. For example, tightly packed epithelial cells describe epithelial tissue, not connective tissue. Similarly, hydroxyapatite crystals are characteristic of bone tissue, and contractile fibers are associated with muscle tissue.

Step 4: Focus on the correct description of ground substance. It is amorphous (lacking a defined shape) and gel-like, which allows it to act as a medium for nutrient and waste exchange between cells and blood vessels.

Step 5: Confirm that the correct answer aligns with the definition of ground substance: 'An amorphous, gel-like material composed mainly of water, proteoglycans, and glycoproteins.'