20 Questions
Which of the following is an example of positive feedback control system?
Fever homeostatic
What is the equation for direct proportionality (isometric scaling) with a constant term?
$Y = aX^1 + C$
What is the equation for allometric scaling?
$Y = aX^b$
What does a logarithmic transformation of non-linear data help with?
Linearizing the data
Which variable is the independent variable in the study of scaling?
Log Body Mass (kg)
What does residual analysis help determine in scaling studies?
Species above or below an allometric line
What is the scaling exponent for mammal basal metabolic rate (BMR)?
0.75
What is the scaling exponent for VO2max?
0.86
What is the equation for heart mass scaling with body mass?
$0.0059M^{0.75}$
What is the equation for heart rate scaling with body mass?
$241M^{-0.25}$
Which of the following is a variable that is part of the internal environment of organisms?
Water temperature
What is the definition of homeostasis?
The condition of a relatively stable internal physiological environment
What is the function of a sensor in homeostasis?
Hypothalamus
Which of the following is an example of negative feedback in homeostasis?
Decrease heat loss when too cold
What type of control is used in homeostasis to regulate body temperature?
Proportional control
Which of the following is an example of hormonal control in homeostasis?
Insulin and glucagon regulate blood sugar levels
Which of the following is an example of neuronal control in homeostasis?
Vasoconstriction and vasodilation regulate heat loss
What are the pros of regulation in physiological processes?
Cells experience constant conditions
What are the cons of regulation in physiological processes?
Energetically costly
What are the pros of conformity in physiological processes?
Energetically cheap
Test your knowledge on physiological regulation and scaling in organismal physiology with this quiz. Explore the concept of the internal environment (milieu intérieur) and its distinct variables such as water, ions, glucose, pH, temperature, gases, and blood glucose in mammals. Learn about conformity versus regulation in physiological processes.
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