Homeostasis and Effector Mechanism Quiz

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What is the formula for calculating the gain of a negative feedback control system?

Gain = Error/Correction

Gain = ABP/CO2

Gain = Stimulus/Response

Gain = Correction/Error (correct)

In homeostasis, what happens to the variable when it is in the opposite state to the stimulus?

It stabilizes (correct)

It remains unchanged

It increases

It decreases

what physiological process is described as a response to high blood pressure?

Vasodilatation (correct)

Sweating

Increased blood clotting

Increase in heart rate

How does positive feedback differ from negative feedback?

Positive feedback does not have correction mechanisms like negative feedback. Signup and view all the answers

What is the significance of gain in a control system?

Gain measures how effectively a control system maintains constant conditions. Signup and view all the answers

Which of the following is true about receptors/sensors in maintaining homeostasis?

Receptors detect changes and initiate responses to maintain internal balance. Signup and view all the answers

What is the main function of a receptor/sensor in a negative feedback loop?

Detect the change and inform control centers Signup and view all the answers

Which of the following can disturb homeostasis as medical factor according to the text?

Chemotherapy Signup and view all the answers

In a negative feedback mechanism, what does the control center do?

Determines the set point and instructs the effector Signup and view all the answers

Why is negative feedback called 'negative' feedback?

Because it always leads to a decrease in the response to the stimulus Signup and view all the answers

Which of the following is an example of a positive feedback mechanism?

Childbirth contractions Signup and view all the answers

How does exercise relate to homeostasis ?

It helps maintain normal homeostasis Signup and view all the answers

Which of the following is a characteristic of positive feedback in physiological processes?

It amplifies the initial stimulus or change. Signup and view all the answers

In the positive feedback control of blood clotting, what is the role of clotting factors?

They activate other clotting factors, leading to a cascade of clotting. Signup and view all the answers

Which of the following statements best describes the role of positive feedback in the regulation of the luteinizing hormone (LH) during the menstrual cycle?

LH levels increase in response to increasing estrogen levels, leading to ovulation. Signup and view all the answers

Which of the following is an example of a pathological positive feedback loop?

Progression of heart failure leading to decreased cardiac output and coronary blood flow. Signup and view all the answers

What is the primary function of positive feedback in physiological processes?

To initiate and amplify a specific process or response. Signup and view all the answers

Homeostasis and Effector Mechanism Quiz

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