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

11. Nervous Tissue and Nervous System

Graded Potentials

Anatomy & Physiology

11. Nervous Tissue and Nervous System

Graded Potentials

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Multiple Choice

The EPSPs from two different synapses occur at the same time and cause a larger depolarization than either one alone can cause. This is an example of:

Presynaptic inhibition.

Postsynaptic melding.

Temporal summation.

Spatial summation.

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Verified step by step guidance

Understand the concept of EPSPs (Excitatory Postsynaptic Potentials): These are changes in the postsynaptic membrane potential that make the neuron more likely to fire an action potential.

Recognize that spatial summation occurs when multiple synapses are activated simultaneously, leading to a combined effect on the postsynaptic neuron.

Differentiate between spatial and temporal summation: Temporal summation involves multiple EPSPs occurring in quick succession at a single synapse, while spatial summation involves simultaneous EPSPs from different synapses.

Identify that the problem describes EPSPs from two different synapses occurring at the same time, which aligns with the definition of spatial summation.

Conclude that the larger depolarization caused by simultaneous EPSPs from different synapses is an example of spatial summation, as it involves the integration of signals from multiple locations on the neuron.