Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Question

Want to see more full solutions like this?

Answer 1

Question

Chapter 1, Problem 1E

Summary Introduction

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Expert Solution & Answer

Answer to Problem 1E

Solution:

The correct answer is option (e).

Explanation of Solution

Explanation/justification for the correct answer:

During childbirth, the uterus undergoes contractions in order to push the fetus out of the cervix. This is aided by the action of the hormone oxytocin. It is known that uterine contractions during parturition induce the production of oxytocin. Oxytocin functions to intensify these contractions and help the fetus to move out of the cervix with ease. Hence, oxytocin sets up a positive feedback loop by increasing the uterine contraction. So, the correct answer is option (e).

Explanation for the incorrect answer:

Option (a) states that in conditions of increased acidity suppresses the cells lining the stomach walls to produce more acid. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect option.

Option (b) states that a rise in blood pressure Triggers the elimination of water in the urine, which reduces blood pressure. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect answer.

Option (c) states that an risein the concentration of H+in blood causes an risein excretion in urine. This is a case of negative feedback as elimination in urine reduces the concentration of H+in blood. Hence this option is incorrect.

Option (d) states that an risein carbon dioxide concentration in the blood Triggers breathing, which increases the rate at which carbon dioxide is eliminated from the body. Elimination reduces the carbon dioxide concentration in blood hence it is negative feedback. So this option is incorrect.

Conclusion

Among the given options option (e) Contraction of the uterus push the fetus against the cervix that triggers the release of oxytocin in the bloodstream; oxytocin the Triggers stronger contraction of the uterus. is an example of positive feedback.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent. b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved

Answer 2

Question

Chapter 1, Problem 1E

Summary Introduction

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Expert Solution & Answer

Answer to Problem 1E

Solution:

The correct answer is option (e).

Explanation of Solution

Explanation/justification for the correct answer:

During childbirth, the uterus undergoes contractions in order to push the fetus out of the cervix. This is aided by the action of the hormone oxytocin. It is known that uterine contractions during parturition induce the production of oxytocin. Oxytocin functions to intensify these contractions and help the fetus to move out of the cervix with ease. Hence, oxytocin sets up a positive feedback loop by increasing the uterine contraction. So, the correct answer is option (e).

Explanation for the incorrect answer:

Option (a) states that in conditions of increased acidity suppresses the cells lining the stomach walls to produce more acid. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect option.

Option (b) states that a rise in blood pressure Triggers the elimination of water in the urine, which reduces blood pressure. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect answer.

Option (c) states that an risein the concentration of H+in blood causes an risein excretion in urine. This is a case of negative feedback as elimination in urine reduces the concentration of H+in blood. Hence this option is incorrect.

Option (d) states that an risein carbon dioxide concentration in the blood Triggers breathing, which increases the rate at which carbon dioxide is eliminated from the body. Elimination reduces the carbon dioxide concentration in blood hence it is negative feedback. So this option is incorrect.

Conclusion

Among the given options option (e) Contraction of the uterus push the fetus against the cervix that triggers the release of oxytocin in the bloodstream; oxytocin the Triggers stronger contraction of the uterus. is an example of positive feedback.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 1, Problem 1E

Summary Introduction

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Expert Solution & Answer

Answer to Problem 1E

Solution:

The correct answer is option (e).

Explanation of Solution

Explanation/justification for the correct answer:

During childbirth, the uterus undergoes contractions in order to push the fetus out of the cervix. This is aided by the action of the hormone oxytocin. It is known that uterine contractions during parturition induce the production of oxytocin. Oxytocin functions to intensify these contractions and help the fetus to move out of the cervix with ease. Hence, oxytocin sets up a positive feedback loop by increasing the uterine contraction. So, the correct answer is option (e).

Explanation for the incorrect answer:

Option (a) states that in conditions of increased acidity suppresses the cells lining the stomach walls to produce more acid. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect option.

Option (b) states that a rise in blood pressure Triggers the elimination of water in the urine, which reduces blood pressure. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect answer.

Option (c) states that an risein the concentration of H+in blood causes an risein excretion in urine. This is a case of negative feedback as elimination in urine reduces the concentration of H+in blood. Hence this option is incorrect.

Option (d) states that an risein carbon dioxide concentration in the blood Triggers breathing, which increases the rate at which carbon dioxide is eliminated from the body. Elimination reduces the carbon dioxide concentration in blood hence it is negative feedback. So this option is incorrect.

Conclusion

Among the given options option (e) Contraction of the uterus push the fetus against the cervix that triggers the release of oxytocin in the bloodstream; oxytocin the Triggers stronger contraction of the uterus. is an example of positive feedback.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 1, Problem 1E

Summary Introduction

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Expert Solution & Answer

Answer to Problem 1E

Solution:

The correct answer is option (e).

Explanation of Solution

Explanation/justification for the correct answer:

During childbirth, the uterus undergoes contractions in order to push the fetus out of the cervix. This is aided by the action of the hormone oxytocin. It is known that uterine contractions during parturition induce the production of oxytocin. Oxytocin functions to intensify these contractions and help the fetus to move out of the cervix with ease. Hence, oxytocin sets up a positive feedback loop by increasing the uterine contraction. So, the correct answer is option (e).

Explanation for the incorrect answer:

Option (a) states that in conditions of increased acidity suppresses the cells lining the stomach walls to produce more acid. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect option.

Option (b) states that a rise in blood pressure Triggers the elimination of water in the urine, which reduces blood pressure. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect answer.

Option (c) states that an risein the concentration of H+in blood causes an risein excretion in urine. This is a case of negative feedback as elimination in urine reduces the concentration of H+in blood. Hence this option is incorrect.

Option (d) states that an risein carbon dioxide concentration in the blood Triggers breathing, which increases the rate at which carbon dioxide is eliminated from the body. Elimination reduces the carbon dioxide concentration in blood hence it is negative feedback. So this option is incorrect.

Conclusion

Among the given options option (e) Contraction of the uterus push the fetus against the cervix that triggers the release of oxytocin in the bloodstream; oxytocin the Triggers stronger contraction of the uterus. is an example of positive feedback.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 1, Problem 1E

Summary Introduction

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Expert Solution & Answer

Answer to Problem 1E

Solution:

The correct answer is option (e).

Explanation of Solution

Explanation/justification for the correct answer:

During childbirth, the uterus undergoes contractions in order to push the fetus out of the cervix. This is aided by the action of the hormone oxytocin. It is known that uterine contractions during parturition induce the production of oxytocin. Oxytocin functions to intensify these contractions and help the fetus to move out of the cervix with ease. Hence, oxytocin sets up a positive feedback loop by increasing the uterine contraction. So, the correct answer is option (e).

Explanation for the incorrect answer:

Option (a) states that in conditions of increased acidity suppresses the cells lining the stomach walls to produce more acid. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect option.

Option (b) states that a rise in blood pressure Triggers the elimination of water in the urine, which reduces blood pressure. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect answer.

Option (c) states that an risein the concentration of H+in blood causes an risein excretion in urine. This is a case of negative feedback as elimination in urine reduces the concentration of H+in blood. Hence this option is incorrect.

Option (d) states that an risein carbon dioxide concentration in the blood Triggers breathing, which increases the rate at which carbon dioxide is eliminated from the body. Elimination reduces the carbon dioxide concentration in blood hence it is negative feedback. So this option is incorrect.

Conclusion

Among the given options option (e) Contraction of the uterus push the fetus against the cervix that triggers the release of oxytocin in the bloodstream; oxytocin the Triggers stronger contraction of the uterus. is an example of positive feedback.

Answer 6

Chapter 1, Problem 1E

Summary Introduction

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Expert Solution & Answer

Answer to Problem 1E

Solution:

The correct answer is option (e).

Explanation of Solution

Explanation/justification for the correct answer:

During childbirth, the uterus undergoes contractions in order to push the fetus out of the cervix. This is aided by the action of the hormone oxytocin. It is known that uterine contractions during parturition induce the production of oxytocin. Oxytocin functions to intensify these contractions and help the fetus to move out of the cervix with ease. Hence, oxytocin sets up a positive feedback loop by increasing the uterine contraction. So, the correct answer is option (e).

Explanation for the incorrect answer:

Option (a) states that in conditions of increased acidity suppresses the cells lining the stomach walls to produce more acid. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect option.

Option (b) states that a rise in blood pressure Triggers the elimination of water in the urine, which reduces blood pressure. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect answer.

Option (c) states that an risein the concentration of H+in blood causes an risein excretion in urine. This is a case of negative feedback as elimination in urine reduces the concentration of H+in blood. Hence this option is incorrect.

Option (d) states that an risein carbon dioxide concentration in the blood Triggers breathing, which increases the rate at which carbon dioxide is eliminated from the body. Elimination reduces the carbon dioxide concentration in blood hence it is negative feedback. So this option is incorrect.

Conclusion

Among the given options option (e) Contraction of the uterus push the fetus against the cervix that triggers the release of oxytocin in the bloodstream; oxytocin the Triggers stronger contraction of the uterus. is an example of positive feedback.

Answer 7

Chapter 1, Problem 1E

Summary Introduction

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Answer 8

Expert Solution & Answer

Answer to Problem 1E

Solution:

The correct answer is option (e).

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Explanation/justification for the correct answer:

During childbirth, the uterus undergoes contractions in order to push the fetus out of the cervix. This is aided by the action of the hormone oxytocin. It is known that uterine contractions during parturition induce the production of oxytocin. Oxytocin functions to intensify these contractions and help the fetus to move out of the cervix with ease. Hence, oxytocin sets up a positive feedback loop by increasing the uterine contraction. So, the correct answer is option (e).

Explanation for the incorrect answer:

Option (a) states that in conditions of increased acidity suppresses the cells lining the stomach walls to produce more acid. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect option.

Option (b) states that a rise in blood pressure Triggers the elimination of water in the urine, which reduces blood pressure. This is an example of negative feedback as the response to the change is in reverse direction to the cause. So, this is an incorrect answer.

Option (c) states that an risein the concentration of H+in blood causes an risein excretion in urine. This is a case of negative feedback as elimination in urine reduces the concentration of H+in blood. Hence this option is incorrect.

Option (d) states that an risein carbon dioxide concentration in the blood Triggers breathing, which increases the rate at which carbon dioxide is eliminated from the body. Elimination reduces the carbon dioxide concentration in blood hence it is negative feedback. So this option is incorrect.

Answer 12

Conclusion

Among the given options option (e) Contraction of the uterus push the fetus against the cervix that triggers the release of oxytocin in the bloodstream; oxytocin the Triggers stronger contraction of the uterus. is an example of positive feedback.

Answer 13

Ch. 1.1 - Define physiology Ch. 1.1 - Name and describe the four basis types of cells...Ch. 1.1 - Name the ten organ systems, and briefly state the...Ch. 1.1 - What is the difference between absorption and...Ch. 1.1 - Why is extracellular fluid referred to as the...Ch. 1.1 - Prob. 1.2.3QC Ch. 1.2 - Prob. 1CTQ Ch. 1.2 - What are the roles of blood pressure and sweat...Ch. 1.2 - Prob. 3CTQ Ch. 1.2 - Define homeostasis, and explain how it enables...

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Videos

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Answer to Problem 1E

Explanation of Solution

Want to see more full solutions like this?

Chapter 1 Solutions

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Videos

Introduction: Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.

Answer to Problem 1E

Explanation of Solution

Want to see more full solutions like this?

Chapter 1 Solutions

Introduction:

Positive feedback is a physiological phenomenon in which a change in the system’s internal condition generates a response in the same direction as the cause of the change. In other words, positive feedback intensifies a physiological condition.