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

Which type of muscle fiber is characterized by being striated, voluntary, and multinucleated?

Skeletal muscle fiber

Cardiac muscle fiber

Smooth muscle fiber

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Verified step by step guidance

Step 1: Begin by understanding the characteristics of the three types of muscle fibers: skeletal, cardiac, and smooth. Each type has distinct structural and functional features.

Step 2: Recall that skeletal muscle fibers are striated, meaning they have a striped appearance under a microscope due to the arrangement of actin and myosin filaments. They are also voluntary, meaning their contraction is consciously controlled, and multinucleated, meaning each fiber contains multiple nuclei.

Step 3: Compare skeletal muscle fibers to cardiac muscle fibers. Cardiac muscle fibers are also striated but are involuntary (controlled by the autonomic nervous system) and typically have a single nucleus per cell.

Step 4: Contrast skeletal muscle fibers with smooth muscle fibers. Smooth muscle fibers are non-striated, involuntary, and typically have a single nucleus per cell. They are found in the walls of hollow organs like the intestines and blood vessels.

Step 5: Based on the characteristics provided in the question (striated, voluntary, and multinucleated), identify that the correct type of muscle fiber is skeletal muscle fiber.