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

Reflex Arcs

Anatomy & Physiology

13. The Peripheral Nervous System

Reflex Arcs

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Multiple Choice

Which of the following correctly represents the sequence of components in a typical reflex arc?

Integration center → Sensory neuron → Receptor → Motor neuron → Effector

Sensory neuron → Receptor → Integration center → Effector → Motor neuron

Receptor → Sensory neuron → Integration center → Motor neuron → Effector

Effector → Motor neuron → Integration center → Sensory neuron → Receptor

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Verified step by step guidance

Step 1: Understand the concept of a reflex arc. A reflex arc is the neural pathway that controls a reflex action. It typically involves five main components: receptor, sensory neuron, integration center, motor neuron, and effector.

Step 2: Define each component in the reflex arc: - Receptor: Detects the stimulus (e.g., pain, temperature, pressure). - Sensory neuron: Transmits the signal from the receptor to the integration center. - Integration center: Processes the information, typically located in the spinal cord or brain. - Motor neuron: Carries the response signal from the integration center to the effector. - Effector: Executes the response (e.g., muscle contraction or gland secretion).

Step 3: Analyze the given sequences and compare them to the correct order of components in a reflex arc. The correct sequence is: Receptor → Sensory neuron → Integration center → Motor neuron → Effector.

Step 4: Eliminate incorrect options by identifying sequences that do not follow the logical flow of information in a reflex arc. For example, sequences that place the effector or motor neuron before the integration center are incorrect.

Step 5: Confirm the correct sequence by ensuring it aligns with the physiological process of a reflex arc, where the stimulus is detected by the receptor, transmitted via the sensory neuron, processed in the integration center, and responded to by the motor neuron and effector.