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When a stimulus is applied to a sensory ending what kind of potential is produced?
When a stimulus is applied to a sensory ending, it can lead to the generation of a receptor potential. This receptor potential is a graded potential that can trigger an action potential along the sensory neuron, leading to the transmission of the sensory input to the central nervous system for processing and interpretation.
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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
What is controlled by the magnitude of a receptor potential?
The magnitude of a receptor potential determines the strength of the stimulus detected by the sensory receptor. A larger receptor potential indicates a stronger stimulus, while a smaller receptor potential indicates a weaker stimulus. This information is then transmitted to the central nervous system for further processing and perception.
What process describes the conversion of an external stimulus to an internal action potential?
The process is known as sensory transduction. It involves converting an external stimulus, such as light or sound, into an electrical signal (action potential) in sensory neurons. This electrical signal is then transmitted to the brain for further processing and interpretation.
Which type of sensory receptor is used to detect a stimulus by the special sense of hearing?
Mechanoreceptors are the type of sensory receptor used to detect a stimulus in the special sense of hearing. These receptors respond to mechanical stimuli such as vibrations in the environment that are produced by sound waves.
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.
What is controlled by the magnitude of a receptor potential?
The magnitude of a receptor potential determines the strength of the stimulus detected by the sensory receptor. A larger receptor potential indicates a stronger stimulus, while a smaller receptor potential indicates a weaker stimulus. This information is then transmitted to the central nervous system for further processing and perception.
When a sensory neuron is excited by some of energy the resulting graded potential is called?
The resulting graded potential is called a receptor potential. This potential is generated in response to a stimulus and serves to initiate the transmission of sensory information to the central nervous system.
What process describes the conversion of an external stimulus to an internal action potential?
The process is known as sensory transduction. It involves converting an external stimulus, such as light or sound, into an electrical signal (action potential) in sensory neurons. This electrical signal is then transmitted to the brain for further processing and interpretation.
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
Which type of sensory receptor is used to detect a stimulus by the special sense of hearing?
Mechanoreceptors are the type of sensory receptor used to detect a stimulus in the special sense of hearing. These receptors respond to mechanical stimuli such as vibrations in the environment that are produced by sound waves.
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 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 stimulus threshold?
ST - In regards to excitable cell (i.e. neurons) the minimum mV need to trigger a AP (action potential) and is around -40mV (although this may vary depending on the cell). In additional to this; excitable cells (i.e. neurons) shows an all-or-nothing property, such that if the stimulus threshold is not met the action potential will not be created.
