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Questions and Answers
The parasympathetic nervous system refers to nerves that originate in the _ and the _ portion of the spinal cord, and are active when the body is at rest or trying to restore body energy and function.
The parasympathetic nervous system refers to nerves that originate in the _ and the _ portion of the spinal cord, and are active when the body is at rest or trying to restore body energy and function.
What is the neurotransmitter of parasympathetic nerves?
What is the neurotransmitter of parasympathetic nerves?
Acetylcholine
When the body is at rest, the parasympathetic nervous system is active.
When the body is at rest, the parasympathetic nervous system is active.
True
Parasympathetic nerves are more active during periods of rest.
Parasympathetic nerves are more active during periods of rest.
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Unlike sympathetic nerves, parasympathetic nerves do not innervate many blood vessels.
Unlike sympathetic nerves, parasympathetic nerves do not innervate many blood vessels.
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What are the two main classes of Ach receptors?
What are the two main classes of Ach receptors?
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The postsynaptic cholinergic receptors on the surface of the effector organs are divided into two classes: _ and _
The postsynaptic cholinergic receptors on the surface of the effector organs are divided into two classes: _ and _
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Binding to a receptor leads to a biologic response within the cell, such as the initiation of a nerve impulse in a postganglionic fiber or activation of specific enzymes in effector cells, as mediated by second-messenger molecules.
Binding to a receptor leads to a biologic response within the cell, such as the initiation of a nerve impulse in a postganglionic fiber or activation of specific enzymes in effector cells, as mediated by second-messenger molecules.
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What is the process of recycling of choline?
What is the process of recycling of choline?
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Degradation of acetylcholine occurs by Ach esterase enzyme which is present in the presynaptic nerve terminal.
Degradation of acetylcholine occurs by Ach esterase enzyme which is present in the presynaptic nerve terminal.
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What are the two types of acetylcholine esterase?
What are the two types of acetylcholine esterase?
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True cholinesterase is found in nerve endings, neuromuscular junction and red blood cells.
True cholinesterase is found in nerve endings, neuromuscular junction and red blood cells.
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Pseudocholinesterase, non-specific found in plasma, intestine, liver and skin.
Pseudocholinesterase, non-specific found in plasma, intestine, liver and skin.
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Study Notes
Parasympathetic Nervous System
- The parasympathetic nervous system consists of nerves originating in the brain and the sacral part of the spinal cord.
- It's active when the body is at rest or trying to restore energy and function (Rest and Digest).
- Acetylcholine is the neurotransmitter.
- When the body is at rest, the parasympathetic nervous system is active.
- Parasympathetic nerves are more active during periods of rest.
- Unlike sympathetic nerves, parasympathetic nerves do not innervate many blood vessels.
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Description
This quiz dives into the structure and function of the parasympathetic nervous system, detailing its role in the body's rest and digest processes. It covers key aspects such as the origin of parasympathetic nerves, their activity during rest, and the neurotransmitter involved. Test your knowledge and understanding of this vital part of the nervous system!
