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Which mechanisms of hormone action is used by neurotransmitters and olfactory receptors?
cAMP
Which of the following mechanisms of hormone action is used by neurotransmitters and olfactory receptors?
cAMP
The specificity of hormone action derives from?
arget cell receptors that are unique for each hormone.
WHAT are neurotransmitters are inhibitory?
neurotransmitters are called Inhibitory if the activation of the receptors causes hyper-polarisation and depresses action potential generation (slows down processes)
What are the 7 steps in neurotransmitter action?
1)snythesis, 2) storage in vesicles, 3) breakdown of any neurotransmitter leaking from the vesicles, 4) exocytosis, 5) inhibitory feedback via autoreceptors, 6) activation of postsynaptic receptors, and 7) deactivation.
The action potential causes neurotransmitters to be released into the?
synaptic cleft. This release allows the neurotransmitters to bind to receptors on the postsynaptic neuron, leading to changes in its membrane potential and potentially initiating a new action potential in the receiving neuron.
What is in the dendrites of the postsynaptic nerve?
Dendrites of a postsynaptic nerve contain receptors for neurotransmitters released by the presynaptic neuron. These receptors detect and respond to the neurotransmitters by initiating an electrical signal that travels towards the cell body. This signal determines whether the neuron will fire an action potential.
Do neurotransmitters help to create new action potential?
No, neurotransmitters do not create new action potentials. They transmit signals between neurons by binding to receptors on the receiving neuron, causing a change in the membrane potential of the receiving neuron which may lead to the generation of a new action potential.
Where do neurotransmitters bind on adjacent dendrite?
Neurotransmitters bind to specific receptors located on the postsynaptic membrane of adjacent dendrites. These receptors are usually part of ion channels or G-protein coupled receptors, which, when activated, trigger a response in the postsynaptic neuron. This binding can lead to excitatory or inhibitory effects, influencing the likelihood of the neuron firing an action potential.
What happens when the action potential reaches the axon terminal"?
When the action potential reaches the axon terminal, it triggers the release of neurotransmitters into the synapse, which then bind to receptors on the neighboring neuron, continuing the signal transmission.
Where are nuerotransmitters stored?
Neurotransmitters are stored in tiny sacs called synaptic vesicles within the axon terminals of neurons. When an action potential travels down the neuron, these vesicles release neurotransmitters into the synapse, where they can then bind to receptors on the adjacent neuron.
What feature of target cells allows hormonal action?
Target cells have specific receptors on their surface that can bind to hormones. These receptors are typically highly specific, allowing the hormone to deliver its message only to cells that have the appropriate receptor. Once the hormone binds to the receptor, it triggers a series of intracellular events that ultimately lead to the desired cellular response.
