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

In which types of muscle tissue are the myofilaments arranged into sarcomeres?

Skeletal and smooth muscle

Smooth and cardiac muscle

Only smooth muscle

Skeletal and cardiac muscle

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Verified step by step guidance

Understand the structure of sarcomeres: Sarcomeres are the repeating units of myofilaments (actin and myosin) within muscle fibers, responsible for the striated appearance and contraction mechanism in certain muscle types.

Review the three types of muscle tissue: Skeletal muscle, cardiac muscle, and smooth muscle. Skeletal and cardiac muscles are striated, while smooth muscle is non-striated.

Identify the presence of sarcomeres: Sarcomeres are present in striated muscle tissues, which include skeletal and cardiac muscle. Smooth muscle lacks sarcomeres and does not have a striated appearance.

Relate sarcomeres to muscle function: Sarcomeres enable the organized contraction mechanism in skeletal and cardiac muscles, which is essential for voluntary movements (skeletal) and rhythmic contractions (cardiac). Smooth muscle contracts differently, using a less organized arrangement of myofilaments.

Conclude that the correct answer is skeletal and cardiac muscle, as these are the muscle types where myofilaments are arranged into sarcomeres.