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

How does smooth muscle differ from skeletal muscle?

Both smooth and skeletal muscles are involuntary and lack striations.

Smooth muscle is involuntary and lacks striations, while skeletal muscle is voluntary and striated.

Both smooth and skeletal muscles are voluntary and striated.

Smooth muscle is voluntary and striated, while skeletal muscle is involuntary and lacks striations.

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Verified step by step guidance

Understand the basic characteristics of smooth muscle: Smooth muscle is found in the walls of hollow organs (e.g., intestines, blood vessels) and is involuntary, meaning it is controlled by the autonomic nervous system. It lacks striations because its actin and myosin filaments are not organized into sarcomeres.

Understand the basic characteristics of skeletal muscle: Skeletal muscle is attached to bones and is responsible for voluntary movements. It is controlled by the somatic nervous system and has a striated appearance due to the organized arrangement of actin and myosin filaments into sarcomeres.

Compare the control mechanisms: Smooth muscle is involuntary, meaning it functions without conscious control, while skeletal muscle is voluntary, meaning it requires conscious effort to contract.

Compare the structural differences: Smooth muscle lacks striations because its contractile proteins are arranged in a less organized manner, whereas skeletal muscle is striated due to the highly organized arrangement of sarcomeres.

Summarize the key differences: Smooth muscle is involuntary and lacks striations, while skeletal muscle is voluntary and striated. This distinction is crucial for understanding their roles in the body and their mechanisms of contraction.