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When a stimulus is applied to a sensory ending what kind of potential is produced?
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WhatConversion of a stimulus into a generator potential is?
Receptor potential, a type of graded potential, is the transmembrane potential difference of a sensory receptor. A receptor potential is often produced by sensory transduction. It is generally a depolarizing event resulting from inward current flow. The influx of current will often bring the membrane potential of the sensory receptor towards the threshold for triggering an action potential. A receptor potential is a form of graded potential, as is a generator potential. It arises when the receptors of a stimulus are separate cells. An example of this is in a taste bud, where taste is converted into an electrical signal sent to the brain. When stimulated the taste bud triggers the release of neurotransmitter through exocytosis of synaptic vesicles from the presynaptic membrane. The neurotransmitter molecules diffuse across the synaptic cleft to the postsynaptic membrane. A postsynaptic potential is then produced in the first order neuron, and if the stimulus is strong enough to reach threshold this may generate an action potential which may propagate along the axon into the central nervous system
How is the brain informed that a receptor is adapting to a stimulus?
The amplitude of the generator potential or the frequency discharge of the sensory fiber decreases.
Why is the resting membrane potential the same value in both the sensory neuron and the interneuron?
Because it didnt have a stimulus to activate depolarization
Which neurons decide about the action for a certain stimulus?
Sensory neuron
What happens at the level of the neuron starting with stimulus and ending with a response?
The stimulus is detected by the sensory receptor. The sensory receptor stimulates a sensory neuron. The sensory neuron transmits to the interneuron in the spinal cord. The interneuron stimulates a motor neuron. The motor neuron communicates to the muscle. The muscle(effector) then produces the response allowing the body to respond to the stimulus.
What is a decreased sensitivity that occurs when a stimulus is continuously applied to sensory receptors called?
It all depends on the sensory receptors affected by continuous stimulus applied. It can cause complete damage to the receptors and or prevent them from receiving the correct signals.
WhatConversion of a stimulus into a generator potential is?
Receptor potential, a type of graded potential, is the transmembrane potential difference of a sensory receptor. A receptor potential is often produced by sensory transduction. It is generally a depolarizing event resulting from inward current flow. The influx of current will often bring the membrane potential of the sensory receptor towards the threshold for triggering an action potential. A receptor potential is a form of graded potential, as is a generator potential. It arises when the receptors of a stimulus are separate cells. An example of this is in a taste bud, where taste is converted into an electrical signal sent to the brain. When stimulated the taste bud triggers the release of neurotransmitter through exocytosis of synaptic vesicles from the presynaptic membrane. The neurotransmitter molecules diffuse across the synaptic cleft to the postsynaptic membrane. A postsynaptic potential is then produced in the first order neuron, and if the stimulus is strong enough to reach threshold this may generate an action potential which may propagate along the axon into the central nervous system
Define adaptation of sensory receptors?
When a stimulus is applied for a prolonged period, the rate of receptor response slows and our conscious awareness of the stimulus declines or is lost until some type of stimulus change occurs.
Why is the resting membrane potential the same in both the sensory neuron and the interneuron?
Because it didnt have a stimulus to activate depolarization
How is the brain informed that a receptor is adapting to a stimulus?
The amplitude of the generator potential or the frequency discharge of the sensory fiber decreases.
Why is the resting membrane potential the same value in both the sensory neuron and the interneuron?
Because it didnt have a stimulus to activate depolarization
What are the very first of the three steps basic to all sensory systems?
1. Recieve stimulus 2. Transform stimulus 3. Deliver stimulus
Which neurons decide about the action for a certain stimulus?
Sensory neuron
What is the neural impulse generated by the movement of positively charged atoms in and out of channels in the axon's membrane?
simple automatic, inborn response to a sensory stimulus
Simple automaticinborn response to a sensory stimulus?
reflex
What is a Specialized area of sensory neuron that detects a specific stimulus?
the answer to this question would be sensory receptor
What happens at the level of the neuron starting with stimulus and ending with a response?
The stimulus is detected by the sensory receptor. The sensory receptor stimulates a sensory neuron. The sensory neuron transmits to the interneuron in the spinal cord. The interneuron stimulates a motor neuron. The motor neuron communicates to the muscle. The muscle(effector) then produces the response allowing the body to respond to the stimulus.
