Question

In: Biology

True or False (circle one): Hyperactivation (i.e. extreme activation) of sensory receptors like Meisner’s corpuscles or...

  1. True or False (circle one): Hyperactivation (i.e. extreme activation) of sensory receptors like Meisner’s corpuscles or Merkel’s discs allows for nociceptive information to be conducted to the primary sensory cortex.

Explain your answer to the question immediately above. If the answer is true, explain how these receptors use graded potentials to differentiate between touch and nociception. If the answer is false, explain how touch and nociceptive stimuli activate different structures and/or channels in their respective axons. Please give examples for each.

Solutions

Expert Solution

Answer is true: Hyperactivation (i.e. extreme activation) of sensory receptors like Meisner’s corpuscles or Merkel’s discs allows for nociceptive information to be conducted to the primary sensory cortex.

Explanation: Merkel’s disks are found to be present in the upper layers of skin near the base of the epidermis. Pain is the another name given to nociception, which is the neural processing of harmful stimuli in response to some tissue damage. Nociception starts at the sensory receptors, but pain doesnot start until it is communicated to the brain. There are various nociceptive pathways which are going to and through the brain. Most of the axons carrying nociceptive information into the brain via spinal cord, direct it to the thalamus region and their neural signal undergoes final processing in the primary somatosensory cortex.

- explain how these receptors use graded potentials to differentiate between touch and nociception.

Merkel’s disks and Meissner’s corpuscles are located in the upper layers and can specifically confine even mild touch. Large receptors are located in the lower layers of the skin and respond to deeper touch. And thus finally primary somatosensory cortex and secondary cortical areas in the brain are responsible for processing the climax picture of stimuli transmitted from the interaction of mechanoreceptors.

When tissue is damaged, certain chemical substances are released from the cells, and these substances activate the chemosensitive nociceptors. Mechanoreceptive nociceptors have a high inception for activation, they respond to mechanical stimulation that is so intense it might damage the tissue. Sensory information which is collected from the receptors and free nerve endings travels up to the spinal cord and is then transmitted to the medulla, thalamus, and ultimately to somatosensory cortex.


Related Solutions

(True and False) Circle the correct answers. (True or False)   A continuous metric is one derived...
(True and False) Circle the correct answers. (True or False)   A continuous metric is one derived by counting something. (True or False) Categorical data is nominal data. (True or False) The tracking signal is the MAD divided by the running sum or errors. ((True or False) Ordinal data are ranked according to some relationship to one another. (True or False) Observations that radically different than the rest are called outlaws. (True or False) The second quartile and median are the...
For each statement below circle TRUE if the statement is true, otherwise circle FALSE.
For each statement below circle TRUE if the statement is true, otherwise circle FALSE. A hypothesis test uses data from a sample to assess a claim about a population. A randomization distribution will be centered at the value used in the null hypothesis. “Failing to reject the null hypothesis” and “accepting the null hypothesis” mean the same thing in a hypothesis test’s conclusion. The p-value is the probability, assuming the alternative hypothesis is true, of obtaining a sample statistic as...
True/False (circle one) AdaBoost is a boosting algorithm that has been described as one of the...
True/False (circle one) AdaBoost is a boosting algorithm that has been described as one of the best “off-                                        the-shelves” classifier. AdaBoost always outperforms the simpler bagging algorithm.
The Fab region of an antibody is highly variable. True False Toll-like receptors recognize certain bacterial...
The Fab region of an antibody is highly variable. True False Toll-like receptors recognize certain bacterial molecules like peptidoglycan and lipopolysaccharide. True False Antihistamines may be an effective treatment for a Type I – Immediate IgE mediated hypersensitivity. True False The Fc region of an antibody is highly variable. True False Natural Killer Cells are classified as lymphocytes that lack antigenic specificity. True False B-cells never interact with free antigens. True False Natural active immunity occurs when you are exposed...
. True or false, 2 pts each. If the statement is ever false, circle false as...
. True or false, 2 pts each. If the statement is ever false, circle false as your answer. No work is required, and no partial credit will be given. In each case, assume f is a smooth function (its derivatives of all orders exist and are continuous). If f has a constraint g = c, assume that g is smooth and that ∇g is never 0. (a) If f has a maximum at the point (a, b) subject to the...
Circle TRUE or FALSE: every consumer’s income offer curve must pass through the origin. Circle TRUE...
Circle TRUE or FALSE: every consumer’s income offer curve must pass through the origin. Circle TRUE or FALSE: if a consumer’s wealth comes from an endowment, then that consumer’s demanded bundle is always different from the endowment bundle. Circle TRUE or FALSE: if a consumer has complete preferences, then those preferences are automatically reflexive.
1. For each, circle either True or False. please add an explanation to each one so...
1. For each, circle either True or False. please add an explanation to each one so i can understand the reasoning   (a) (1 point) A continuous function is always integrable. T/F (b) (1 point) A differentiable function is always continuous. T/F (c) (1 point) An integrable function is always differentiable. T/F (d) (1 point) If c is a critical value of function f then f(c) is a relative maximum. T/F (e) (1 point) If c is a relative minimum of...
9.   Answer each of the following as True or False.             a.  A good Manager, i.e., one who...
9.   Answer each of the following as True or False.             a.  A good Manager, i.e., one who wants to maximize profit or minimize loss, will not            operate in Stage III of production.       b.  In the market period, the supply curve is perfectly elastic.       c.  When increasing returns to scale exist, long-run average cost increases as output            increases.       d.  The law of diminishing returns is relevant for the short-run.       e.  Average fixed cost always decreases as output increases. 10.  a.  What is the difference between fixed proportions and...
True or false: The quantity represented by ω0 is a function of time (i.e., is not...
True or false: The quantity represented by ω0 is a function of time (i.e., is not constant). True or false: The quantity represented by ω is a function of time (i.e., is not constant Which of the following equations is not an explicit function of time t, that is, does not involve t as a variable, and is therefore useful when you do not know or do not need the time? θ=θ0+ω0t+(1/2)αt2 ω=ω0+αt ω2=ω02+2α(θ−θ0) In the equation ω=ω0+αt, what does...
these 5 statements are true or false? thanks Cytosolic receptors do not bind to hydrophilic signals....
these 5 statements are true or false? thanks Cytosolic receptors do not bind to hydrophilic signals. Receptor for epinephrine consists of seven transmembrane helixes. The enzymatic reaction catalysed by adenylyl cyclase uses ATP. Amino acids, glucose and triglycerides are taken up by transporters into liver cells. Decarboxylation occurs when pyruvate is converted to acetyl CoA.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT