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

The neurotransmitter released at all synapses in the parasympathetic division is:

Serotonin.

Norepinephrine.

Epinephrine.

Acetylcholine.

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Verified step by step guidance

Understand the role of the parasympathetic division in the autonomic nervous system, which is responsible for 'rest and digest' activities.

Recognize that neurotransmitters are chemical messengers that transmit signals across synapses from one neuron to another.

Identify the primary neurotransmitter associated with the parasympathetic division, which is acetylcholine. This neurotransmitter is involved in slowing the heart rate, increasing intestinal and gland activity, and relaxing sphincter muscles.

Differentiate acetylcholine from other neurotransmitters such as serotonin, norepinephrine, and epinephrine, which are not typically associated with the parasympathetic division.

Recall that acetylcholine is released at both the preganglionic and postganglionic synapses in the parasympathetic division, making it the key neurotransmitter for this part of the autonomic nervous system.

4:14m

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Related Practice

Open Question

Which neurotransmitter(s) is/are used by sympathetic postganglionic neurons?

a. Epinephrine

b. Norepinephrine

c. Acetylcholine

d. Both a and b

e. All of the above

Open Question

Many chemical warfare agents, such as the poisonous gas sarin, block the enzyme acetylcholinesterase in the synaptic cleft. What effects will this poison have on muscle contraction? (Connects to Chapter 10) What effects will it have on the autonomic nervous system? What symptoms would you expect to see from this poison?

Open Question

Mrs. Jones has had a progressive decline in her mental capabilities in the last five or six years. At first her family attributed her occasional memory lapses, confusion, and agitation to grief over her husband's death six years earlier. When examined, Mrs. Jones was aware of her cognitive problems and was shown to have an IQ score approximately 30 points less than would be predicted by her work history. A CT scan showed diffuse cerebral atrophy. The physician prescribed an acetylcholinesterase inhibitor and Mrs. Jones showed slight improvement. What is Mrs. Jones's problem? Why did the acetylcholinesterase inhibitor help?

Multiple Choice

___________ and ___________ are the major neurotransmitters released by autonomic nervous system neurons.

Multiple Choice

What are the two types of receptors found in the parasympathetic system?

Multiple Choice

Which of the following is released by all somatic motor neurons at their synapses and always has an excitatory effect on skeletal muscle?

Multiple Choice

Which of the following neurotransmitters would be the only secretion of the sympathetic preganglionic fibers of the autonomic nervous system?

Multiple Choice

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