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 Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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Multiple Choice

Smooth muscle contraction is slow, resistant to fatigue, and usually sustained for an extended period of time. Which of the following best completes the statement?

rapid; fatigue

slow; fatigue

slow; injury

rapid; injury

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Verified step by step guidance

Understand the characteristics of smooth muscle: Smooth muscle is involuntary, non-striated, and found in the walls of hollow organs like the intestines and blood vessels. It contracts slowly, is resistant to fatigue, and can sustain contractions for long periods.

Analyze the given statement: The statement describes smooth muscle contraction as slow, resistant to fatigue, and usually sustained for an extended period of time. This aligns with the physiological properties of smooth muscle.

Evaluate the options: The correct completion of the statement must match the characteristics of smooth muscle. For example, 'rapid' does not align with the slow contraction of smooth muscle, and 'injury' is not relevant to the fatigue resistance described.

Focus on the correct pairing: The correct answer should pair 'slow' with 'fatigue,' as smooth muscle contraction is slow and resistant to fatigue. This matches the physiological description provided in the problem.

Confirm the reasoning: Smooth muscle's ability to sustain contractions for extended periods without fatigue is due to its unique cellular structure and energy-efficient mechanisms, making 'slow; fatigue' the most appropriate completion of the statement.