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

14. The Autonomic Nervous System

Neurotransmitters of the ANS

Anatomy & Physiology

14. The Autonomic Nervous System

Neurotransmitters of the ANS

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Multiple Choice

Norepinephrine and epinephrine can have either excitatory or inhibitory effects on target organs.

True

False

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Verified step by step guidance

Understand the role of norepinephrine and epinephrine: These are catecholamines that function as neurotransmitters and hormones, primarily involved in the body's 'fight or flight' response.

Identify the receptors involved: Norepinephrine and epinephrine bind to adrenergic receptors, which are divided into alpha and beta types. Each type can have different effects on target organs.

Explore the effects on different organs: Depending on the receptor type and location, norepinephrine and epinephrine can cause either excitatory or inhibitory effects. For example, they can increase heart rate (excitatory) or relax airway muscles (inhibitory).

Consider the physiological context: The overall effect of these neurotransmitters can vary based on the physiological state of the body and the specific organ system involved.

Conclude based on receptor interaction: Since norepinephrine and epinephrine can interact with multiple receptor types, they can indeed have both excitatory and inhibitory effects on different target organs, supporting the statement as true.