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

What do isometric exercises primarily involve?

Muscle contraction with lengthening of the muscle

Muscle contraction without a change in muscle length

Muscle contraction with shortening of the muscle

Rapid alternating contraction and relaxation of muscles

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Verified step by step guidance

Understand the term 'isometric exercise': Isometric exercises involve muscle contraction without any visible movement of the joint or change in the length of the muscle. This is different from isotonic exercises, which involve muscle lengthening or shortening.

Analyze the options provided: The question asks about the primary characteristic of isometric exercises. Review each option carefully to determine which aligns with the definition of isometric exercises.

Option 1: 'Muscle contraction with lengthening of the muscle' describes eccentric contraction, which is not isometric. Eliminate this option.

Option 3: 'Muscle contraction with shortening of the muscle' describes concentric contraction, which is also not isometric. Eliminate this option.

Option 4: 'Rapid alternating contraction and relaxation of muscles' describes dynamic muscle activity, not isometric. Eliminate this option. The correct answer is 'Muscle contraction without a change in muscle length,' as this matches the definition of isometric exercises.