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The chemo-emetic trigger zone, also known as the chemoreceptor trigger zone (CTZ), is a region in the brain, specifically located in the area postrema of the medulla oblongata. It plays a critical role in the vomiting reflex by detecting toxins, drugs, and other emetic substances in the bloodstream or cerebrospinal fluid. When activated, it sends signals to the vomiting center in the brain to initiate the process of vomiting, helping to protect the body from harmful substances. The CTZ is not protected by the blood-brain barrier, allowing it to respond quickly to circulating chemicals.
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What part of the brainstem that receives information from the chemoreceptor trigger zone?
Medulla Oblangota
Excruciating facial pain upon stimulation of a trigger zone?
Bootje patrick...bootje
The trigger zone of a neuron includes?
The trigger zone of a neuron includes the axon hillock, where graded potentials are summed together to determine if an action potential will be initiated. It is the region where voltage-gated sodium channels are concentrated and play a crucial role in generating an action potential. If the depolarization at the trigger zone reaches a certain threshold, an action potential will be generated and propagated down the axon.
What is chemoreceptor trigger zone?
The chemoreceptor trigger zone is a bilateral set of centers in the brainstem lying under the floor of the fourth ventricle.CTZ has connection with vomiting center and play indirectly to stimulate vomiting.. Electrical stimulation of these centers does not induce vomiting, but application of emetic drugs does - if and only if the vomition centers are intact. The chemoreceptor trigger zones function as emetic chemoreceptors for the vomition centers - chemical abnormalities in the body (e.g. emetic drugs, uremia, hypoxia and diabetic ketoacidosis) are sensed by these centers, which then send excitatory signs to the vomition centers. Many of the antiemetic drugs act at the level of the chemoreceptor trigger zone.
What is the trigger point at which a neuron will fire called?
Its where there are a lot of sodium channels. Once the trigger zone is 'triggered' to threshold (from -70mV to -55mv), then an action potential occurs. trigger zone in MOTOR neurons are in the axon hillock and in SENSORY neurons, they're in the 1st unmyelinated area (first node of ranvier).
In a myelinated fiber only the initial segment in the trigger zone have voltage-regulated channels?
In a myelinated fiber, voltage-regulated channels are concentrated at the nodes of Ranvier along the axon. These nodes are where action potentials are regenerated, allowing for faster conduction of the electrical signal compared to unmyelinated fibers. The initial segment before the first node acts as the trigger zone for action potential initiation.
Was mount redoubt caused by an earthquake?
No. Mount Redoubt was formed by a subduction zone. While in som cases earthquakes can trigger volcanic eruptions, they do not cause volcanoes to form.
What are type of trigger?
*static trigger *dynamic trigger *hold trigger
What is the site of action in the brain where antipsychotics work?
Thes are the sites of action in the brain where antipsychotics work. The Basal ganglia, areas of the limbic system, the chemoreceptor trigger zone ,and the cerebral cortex
How does the plasma membrane at the trigger zone differ from that on the soma?
The plasma membrane at the trigger zone of a neuron typically contains a higher density of voltage-gated ion channels, which are responsible for initiating action potentials. This allows for rapid signal transmission along the axon. In contrast, the plasma membrane on the soma (cell body) is involved in integrating signals from various sources before they are transmitted down the axon.
How does a double trigger work?
The second trigger is usually a "set" trigger, that spring loads the forward trigger and makes it into a hair draw trigger.
How does the double trigger on a JG Anschutz 22 rifle work?
Rear trigger is "set" trigger, by pulling it 1st, it makes the main trigger a "hair" or lighter trigger
