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

Where are smooth muscle pacemaker cells primarily found?

In the cardiac muscle

In the skeletal muscles

In the walls of the gastrointestinal tract

In the tendons

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Verified step by step guidance

Understand the role of pacemaker cells: Pacemaker cells are specialized cells that generate rhythmic impulses, which are crucial for initiating and regulating contractions in certain types of muscles.

Identify the types of muscles: There are three main types of muscles in the human body - cardiac, skeletal, and smooth muscles. Each type has distinct characteristics and functions.

Focus on smooth muscle characteristics: Smooth muscles are involuntary muscles found in various parts of the body, including the walls of hollow organs. They are not under conscious control and are responsible for movements such as peristalsis in the gastrointestinal tract.

Locate pacemaker cells in smooth muscles: In smooth muscles, pacemaker cells are primarily found in the walls of the gastrointestinal tract. These cells help regulate the rhythmic contractions necessary for moving food through the digestive system.

Differentiate from other muscle types: Unlike cardiac muscle, which has its own pacemaker cells in the sinoatrial node, and skeletal muscles, which are controlled by the nervous system, smooth muscle pacemaker cells are intrinsic to the muscle tissue itself, particularly in the gastrointestinal tract.