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

Which stage of a reflex arc would be significantly different in a reflex that is initiated by the brain compared to a reflex that is initiated by the spinal cord?

Stage 1- Receptor.

Stage 2- Sensory neuron.

Stage 3- Integration center.

Stage 4- Motor Neuron.

Stage 5- Effector.

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Verified step by step guidance

Understand the concept of a reflex arc: A reflex arc is a neural pathway that controls a reflex action. It typically involves five stages: receptor, sensory neuron, integration center, motor neuron, and effector.

Identify the role of the integration center: The integration center is where the sensory information is processed and a response is generated. In a spinal reflex, this occurs in the spinal cord, while in a brain-initiated reflex, it occurs in the brain.

Compare the integration centers: In a spinal reflex, the integration center is located in the spinal cord, allowing for a quick response without involving the brain. In contrast, a brain-initiated reflex involves the brain as the integration center, which may result in a more complex response.

Analyze the impact of the integration center's location: The location of the integration center affects the speed and complexity of the reflex. Spinal reflexes are typically faster and simpler, while brain-initiated reflexes can be slower but more complex due to higher-level processing.

Conclude that the integration center is the stage that differs significantly: Since the integration center's location (spinal cord vs. brain) is the key difference between spinal and brain-initiated reflexes, Stage 3 - Integration center is the correct answer.