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

Nervous Tissue: The Neuron

Anatomy & Physiology

4. Tissues & Histology

Nervous Tissue: The Neuron

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Multiple Choice

The interplay of multiple excitatory and inhibitory inputs most affects which part of a neuron?

Cell body

Dendrites

Axon terminal

Axon hillock

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Verified step by step guidance

Understand the structure of a neuron: A neuron consists of dendrites, a cell body (soma), an axon, and an axon terminal. Each part has a specific function in the transmission of nerve impulses.

Identify the role of dendrites: Dendrites receive incoming signals from other neurons. These signals can be excitatory or inhibitory, affecting the neuron's potential to fire an action potential.

Examine the function of the cell body: The cell body contains the nucleus and integrates incoming signals from the dendrites. However, it is not the primary site where the decision to fire an action potential is made.

Focus on the axon hillock: The axon hillock is the region where the cell body transitions into the axon. It is crucial for integrating the total excitatory and inhibitory inputs received by the neuron.

Conclude with the axon hillock's role: The axon hillock is the site where the summation of excitatory and inhibitory inputs occurs, determining whether the neuron will reach the threshold to initiate an action potential and transmit the signal down the axon.