Q: What are Refractory Periods?
A: BASIC INFORMATION NEURON It is the longest cell inside the human body It is found in the brain…
Q: What is the role of the relative refractory period?
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Q: What are the purposes of the Absolute and Relative Refractory Periods?
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Q: Explain the meaning and relevance of a sensory neuron’s receptive field?
A: The sensory neuron is a nerve cell and detects external signals. These receive information through…
Q: Discuss how myelination influences the speed of an actionpotential
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Q: Explain the mechanism of sensory transduction in temperaturesensing neurons.
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Q: Describe the structure of Afferent neurons? List its function?
A: The sensations travel through afferent neurons through variety of pathways due to their structural…
Q: what is relative refractory?
A: The refractory period refers to the specific time interval when the excitable cells (like neurons)…
Q: Define and give examples of receptive fields.
A: Receptive field The receptive field of a sensory neuron is a region of space in which the presence…
Q: Compare and contrast ionotropic and signaling. Which senses use which type?
A: The ionotropic receptors are ligand-gated ion channel openings. The metabotropic receptors, on the…
Q: Which ratio between primary neuron and secondary neuron would allow for the greatest receptive field…
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Q: What is absolute refractory period?
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Q: What is the difference of depolarization and hyperpolarization? Why do cold receptors depolarize…
A: both are the phases in the generation and conduction of an action potential.
Q: What is relative refractory period?
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Q: Describe the flow of generation of receptor potential when sensory receptors detected stimuli.
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Q: Explain the physiological basis of the absolute and relative refractory periods?
A: The absolute refractory period can be defined as the period during which another action potential…
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Q: Explain how transductin works regarding the sensation of touch
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Q: How does conduction along a myelinated fiber differ from conduction along an un-myelinated fiber?
A: Myelin is a substance which is rich in lipids and surrounds the nerve cell axons in order to…
Q: If an axon receives two stimuli close together in time, only one AP occurs. Why?
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Q: Do refractory periods help keep APs separate?
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Q: Define Refractory period and differentiate between Absolute refractory and relative refractory…
A: The action potential is a difference in concentration of Sodium (Na+) ions and Potassium (K+) ions…
Q: What is the main mechanism contributing to the absolute refractory period in neurons:
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Q: epsp’s and ipsp’s, where are they occurring
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Q: Applying a pressure stimulus to the fluid-filled capsule of an isolated Pacinian corpuscle causes a…
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Q: What is the difference between the absolute refractory period versus the relative refractory period?
A: Refractory period – duration of time during which the cell is unable to respond to a stimulus. It…
Why can a greater-than-normal stimulus trigger an AP during the relative refractory period but not during the absolute refractory period?
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- Explain the difference between the relative and absolute refractory periods. Briefly describe the cellular events responsible for the refractory period. (Hint: Discuss the mechanism of repolarization).Applying a pressure stimulus to the fluid-filled capsule of an isolated Pacinian corpuscle causes a brief burst of action potentials in the afferent neuron, which ceases until the pressure is removed, at which time another brief burst of action potentials occurs. If an experimenter removes the capsule and applies pressure directly to the afferent neuron ending, action potentials are continuously fired during the stimulus. Explain these results in the context ofadaptation.What is the difference of depolarization and hyperpolarization? Why do cold receptors depolarize quickly and warm receptors hyperpolarize quickly?
- Explain the characteristics and purpose of the refractoryperiod.During the relative refractory period: Can select more than one K+ channels are open. Na+ channels are inactivated. It is impossible to fire a subsequent action potential. It is more difficult, but possible, to elicit another action potential.Does the action potential in a single axon increase in amplitude when the stimulus amplitude is increased? Does the amplitude of the CAP increase because more fibers are firing, or the amplitude of the action potentials from single fibers are increasing, or a combination of both?