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 structure within a muscle detects changes in muscle length and helps regulate muscle stretch?

Sarcomere

Muscle spindle

Golgi tendon organ

Motor end plate

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Verified step by step guidance

Step 1: Begin by understanding the function of each structure listed in the options. The sarcomere is the basic contractile unit of a muscle fiber, responsible for muscle contraction, but it does not detect changes in muscle length.

Step 2: Learn about the muscle spindle. Muscle spindles are specialized sensory receptors located within the muscle that detect changes in muscle length and play a key role in regulating muscle stretch through the stretch reflex.

Step 3: Examine the Golgi tendon organ. This structure is located in the tendons and primarily detects changes in muscle tension, not muscle length.

Step 4: Review the motor end plate. The motor end plate is the site where a motor neuron communicates with a muscle fiber to initiate contraction, but it does not detect changes in muscle length or regulate stretch.

Step 5: Based on the above analysis, identify the correct structure that detects changes in muscle length and regulates muscle stretch as the muscle spindle.