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

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which region of a sarcomere contains only thick filaments and no thin filaments?

I band

H zone

Z disc

A band

Previous problemNext problem

Verified step by step guidance

Understand the structure of a sarcomere: A sarcomere is the functional unit of a muscle fiber, composed of thick filaments (myosin) and thin filaments (actin). It is organized into distinct regions based on the arrangement of these filaments.

Learn the key regions of a sarcomere: The I band contains only thin filaments, the A band contains both thick and thin filaments, the Z disc marks the boundary between sarcomeres, and the H zone is the central region of the A band that contains only thick filaments.

Focus on the H zone: The H zone is located in the middle of the A band and is characterized by the absence of thin filaments. It is the region where only thick filaments are present.

Compare the options provided: The I band contains only thin filaments, the Z disc is a structural boundary, and the A band contains both thick and thin filaments. The H zone is the correct answer because it contains only thick filaments.

Conclude the reasoning: Based on the structural organization of the sarcomere, the H zone is the region that contains only thick filaments and no thin filaments.