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 Heart2h 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

Properties of Graded and Action Potentials

Anatomy & Physiology

11. Nervous Tissue and Nervous System

Properties of Graded and Action Potentials

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Multiple Choice

Spatial summation occurs when __________.

multiple local potentials occur at the same synapse on a cell

an EPSP from one terminal is activated several times in rapid order

multiple local potentials occur at different places on the same cell at the same time

multiple local potentials occur at different times in the same cell

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Verified step by step guidance

Understand the concept of spatial summation: It refers to the process by which multiple local potentials (synaptic inputs) occur at different locations on the same neuron simultaneously, leading to a cumulative effect that can trigger an action potential.

Identify the key elements of spatial summation: It involves multiple synapses on the same neuron being activated at the same time, which can increase the likelihood of reaching the threshold needed for an action potential.

Differentiate spatial summation from temporal summation: Temporal summation involves multiple signals at the same synapse occurring in rapid succession, whereas spatial summation involves signals from different synapses occurring simultaneously.

Consider the physiological significance: Spatial summation allows neurons to integrate information from various sources, enhancing the complexity and responsiveness of neural processing.

Apply this understanding to the problem: Recognize that the correct answer involves multiple local potentials occurring at different places on the same cell at the same time, which aligns with the definition of spatial summation.