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 of the following correctly lists the components of a skeletal muscle from largest to smallest?

Myofibril, myofilament, muscle fiber, fascicle, muscle

Muscle, fascicle, muscle fiber, myofibril, myofilament

Fascicle, muscle, myofibril, muscle fiber, myofilament

Muscle fiber, muscle, fascicle, myofibril, myofilament

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Verified step by step guidance

Step 1: Begin by understanding the hierarchical organization of skeletal muscle. Skeletal muscle is composed of multiple levels of structure, starting from the largest unit (the muscle itself) and progressing to the smallest unit (the myofilament). Each level is nested within the next.

Step 2: Define each component: - Muscle: The largest structure, composed of bundles of fascicles. - Fascicle: A bundle of muscle fibers surrounded by connective tissue. - Muscle fiber: A single muscle cell, which contains many myofibrils. - Myofibril: A cylindrical structure within the muscle fiber, made up of repeating units called sarcomeres. - Myofilament: The smallest structure, composed of actin and myosin proteins that interact to produce muscle contraction.

Step 3: Arrange the components from largest to smallest based on their definitions: Muscle > Fascicle > Muscle Fiber > Myofibril > Myofilament.

Step 4: Compare the given options to the correct hierarchical order. Identify the option that matches the sequence Muscle > Fascicle > Muscle Fiber > Myofibril > Myofilament.

Step 5: Eliminate incorrect options by checking for any deviations from the correct order. Select the option that accurately reflects the hierarchy of skeletal muscle components.