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When the parasympathetic division is stimulated what neurotransmitter is released at the effector organ?
Huntingp5
acetylcholine
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∙ 15y ago
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Which nervous system dominates the control of effector organs under normal everyday conditions?
parasympathetic nervous system
What is the difference between a hormone and a secondary messenger?
The primary effector creates a signal that can diffuse within the cell. This signal is called the "secondary messenger." (The neurotransmitter is the first messenger.) The secondary messenger may then activate a "secondary effector" whose effects depend on the particular secondary messenger system.
A reflex that does not pass through the brain is termed as?
Simple, unconditioned or natural reflexes do not involve the brain. These reflexes occur when a receptor that goes to the spinal cord is stimulated by an impulse or effector. The effector neuron sends a response to the muscle or the gland thus causing an instant action. An example of this type of action would be when you blink your eye due to strong light.
How does effector relate to reflex arc?
An effector is at the end of a reflex arc as it is the muscle or gland that 'does' the reflex. What the effector does is the outcome of the reflex arc.
Muscarinic receptors are inhibitory and excitatory?
Depending on the effector organ it can be inhibitory or excitatory. The muscarinic receptors are activated from the parasympathetic nervous system. So the effect of muscarinic receptors activated on the heart, it will slow the heart down. However, on the gastrointestinal tract, it will increase motility.
What component of the ANS is characterized by ganglion located in or near effector organs?
The component of the ANS that is characterized by ganglion located in or near effector organs is called the parasympathetic nervous system. The ganglia of the parasympathetic nervous system are located close to or within the target organs they innervate, allowing for direct and localized control of bodily functions. This branch of the autonomic nervous system is responsible for promoting rest, digestion, and relaxation.
What Cellular acetylcholine receptor is found in effector organs of the parasympathetic system?
muscarinic receptor
What term is used to designate an effector that is innervated by both parasympathetic and sympathetic divisions of the ANS?
multiautonomic output
Which nervous system dominates the control of effector organs under normal everyday conditions?
parasympathetic nervous system
Which pathways comprise the autonomic nervous system?
two-neuron chain from CNS to effector organs. Parasympathetic and Sympathetic.
Drugs that competitively block the action of acetylcholine at parasympathetic postganglionic effector cell receptors are called?
Anit-Muscarinic
A molecule that is released from synaptic vesicles and serves as the means of communication from one neuron to the next or from a neuron to an effector cell?
Neurotransmitter.
What molecule is released from synaptic vesicles and serves as the means of communication from one neuron to the next or from a neuron to an effector cell?
Neurotransmitter
What neurotransmitter is used by most postganglionic sympathetic neurons?
At the effector end (nerve to effector organ junction) the transmitter is Nor Adrenaline. However, at the nerve-nerve junctions (ganglions) the transmitter is Acetyl Choline.
What will happen if Acetylcholine receptors are destroyed?
If the acetylcholine receptor was destroyed that the effector cells cannot respond or detect the neurotransmitter, resulting in muscle paralysis.
What is the difference between a hormone and a secondary messenger?
The primary effector creates a signal that can diffuse within the cell. This signal is called the "secondary messenger." (The neurotransmitter is the first messenger.) The secondary messenger may then activate a "secondary effector" whose effects depend on the particular secondary messenger system.
Why is the destrructuction of the neurotransmitter important in controllin the activities of the nervous system?
Firstly, we need the neurotransmitter at synaptic junctions to stimulate an action potential on the postsynaptic neurone. Continued amounts of neurotransmitter will keep Na+ diffusing in, and will keep the action potential resending when the period of refraction should be occurring.Therefore, if we do not destroy the neurotransmitter when it is not needed, a signal will keep being sent, and the effector muscle/gland will keep being stimulated.For example, touching a hot plate results may result in your bicep contracting to pull your arm away. If the neurotransmitter isn't destroyed, your bicep will keep contracting even after the event.
