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 is the correct sequence of components in a simple spinal reflex arc?

Effector, Motor Neuron, Interneuron, Sensory Neuron, Receptor

Interneuron, Receptor, Sensory Neuron, Motor Neuron, Effector

Sensory Neuron, Receptor, Motor Neuron, Interneuron, Effector

Receptor, Sensory Neuron, Interneuron, Motor Neuron, Effector

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Verified step by step guidance

Understand the concept of a spinal reflex arc: A spinal reflex arc is a neural pathway that controls a reflex action. It involves several components that work in sequence to produce a quick response to a stimulus.

Identify the first component: The sequence begins with the receptor, which detects the stimulus. Receptors are specialized cells or nerve endings that respond to specific types of stimuli, such as touch, temperature, or pain.

Determine the role of the sensory neuron: After the receptor detects the stimulus, the sensory neuron carries the information from the receptor to the spinal cord. Sensory neurons are responsible for transmitting sensory information to the central nervous system.

Recognize the function of the interneuron: Within the spinal cord, the sensory neuron communicates with an interneuron. Interneurons are responsible for processing the information and determining the appropriate response. They act as a relay between sensory and motor neurons.

Identify the final components: The interneuron then communicates with a motor neuron, which carries the response signal from the spinal cord to the effector. The effector, typically a muscle or gland, performs the reflex action, such as contracting a muscle or secreting a substance.