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

13. The Peripheral Nervous System

Introduction to Reflex Arcs

Anatomy & Physiology

13. The Peripheral Nervous System

Introduction to Reflex Arcs

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Multiple Choice

What are the receptors called that detect stretch in the stretch reflex?

Golgi tendon organs

Pacinian corpuscles

Meissner's corpuscles

Muscle spindles

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Verified step by step guidance

Understand the stretch reflex: The stretch reflex is a protective mechanism that prevents overstretching of muscles. It is initiated when a muscle is stretched, and the receptors involved detect this stretch.

Identify the role of muscle spindles: Muscle spindles are specialized sensory receptors located within the muscle fibers. They are responsible for detecting changes in muscle length and the rate of stretch.

Differentiate muscle spindles from other receptors: Golgi tendon organs detect tension in tendons, Pacinian corpuscles detect pressure and vibration, and Meissner's corpuscles detect light touch. None of these are involved in detecting stretch in the stretch reflex.

Relate muscle spindles to the stretch reflex: When a muscle spindle detects stretch, it sends signals via sensory neurons to the spinal cord. This triggers a reflexive contraction of the stretched muscle to counteract the stretch.

Conclude the correct receptor: Based on the function and location, muscle spindles are the correct receptors involved in detecting stretch during the stretch reflex.