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

A skeletal muscle fiber is:

a single, elongated, multinucleated cell

a type of connective tissue

an individual cardiac muscle cell

a bundle of smooth muscle cells

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Verified step by step guidance

Step 1: Understand the definition of a skeletal muscle fiber. A skeletal muscle fiber is a single, elongated cell that is multinucleated, meaning it contains multiple nuclei within one cell. This is a unique characteristic of skeletal muscle fibers compared to other muscle types.

Step 2: Compare skeletal muscle fibers to other types of muscle cells. Skeletal muscle fibers differ from cardiac muscle cells, which are typically branched and have a single nucleus, and smooth muscle cells, which are spindle-shaped and also have a single nucleus.

Step 3: Eliminate incorrect options. A skeletal muscle fiber is not a type of connective tissue, as connective tissue includes structures like tendons and ligaments, not muscle cells. It is also not a bundle of smooth muscle cells, as smooth muscle cells are found in organs like the intestines and blood vessels, and they function differently from skeletal muscle fibers.

Step 4: Focus on the correct description. A skeletal muscle fiber is best described as a single, elongated, multinucleated cell, which is specialized for contraction and is part of the skeletal muscle system.

Step 5: Confirm the correct answer by matching the characteristics of skeletal muscle fibers to the provided options. The correct answer is: 'a single, elongated, multinucleated cell.'