Table of contents

Skip topic navigation

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

Types of Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Types of 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 type of muscle fibers are more susceptible to fatigue and contain fewer mitochondria?

Cardiac muscle fibers

Type IIa fibers

Type IIb fibers

Type I fibers

Previous problemNext problem

Verified step by step guidance

Understand the different types of muscle fibers: Type I, Type IIa, and Type IIb, and their characteristics.

Type I fibers, also known as slow-twitch fibers, are rich in mitochondria and are resistant to fatigue, making them suitable for endurance activities.

Type IIa fibers, known as fast-twitch oxidative fibers, have a moderate amount of mitochondria and are somewhat resistant to fatigue, suitable for activities requiring both endurance and power.

Type IIb fibers, also known as fast-twitch glycolytic fibers, have fewer mitochondria and are more susceptible to fatigue, making them suitable for short bursts of power and speed.

Cardiac muscle fibers are specialized muscle fibers found in the heart, rich in mitochondria, and highly resistant to fatigue to support continuous heart contractions.