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WorksheetsFeedback mechanism
Total questions: 20
Worksheet time: 15mins
Which of the following is a good definition of homeostasis?
Homeostasis means that our body monitors the value of several
parameters and prevents them from ever changing.
Homeostasis means that our body doesn't regulate the value of
different body parameters.
Homeostasis means that our body monitors the value of several
parameters and restores them to their correct value after any
alteration.
Homeostasis means that we stand still all the time.
Which of the following variables do our bodies regulate:
Blood volume
Body temperature
Glucose concentration in blood
Salt concentration in blood
All answers are correct
What type of feedback loop is shown?
Positive
Negative
Neutral
Which of the following is an example of positive feedback to indirectly
maintain homeostasis?
your blood vessels dilate and you begin to sweat in response to elevated
body temperature
your blood vessels constrict and you begin to shiver in response to low
body temperature
your coach compliments you on your performance in practice
the chemical reactions involved in blood clotting
When glucose levels in the blood rise, your brain sends a signal to your
pancreas. The pancreas releases insulin, which opens channels in cell
membranes to allow glucose to enter the cell, lowering blood sugar levels.
Negative Feedback
Positive Feedback
When the response is amplifies this is an example of a ...
Positive Feedback
Negative Feedback
When the imbalance is counteracted this is an example of a ...
Positive Feedback
Negative Feedback
Which feedback loop helps an organism to get back to the set point and maintain homeostasis?
Positive Feedback
Negative Feedback
Labor contractions is an example of which type of feedback?
Positive Feedback
Negative Feedback
When you blood sugar levels rise the body releases insulin which causes the cells to uptake sugar. Which type of feedback?
Positive Feedback
Negative Feedback
Is the part of a system in which some portion (or all) of the system's output is used as input for future operations.
Feedback loop
Organism
Homeostasis
Feedback
A structure that produces the change
Receptor
Stimulus
Control center
Effector
The processor of all information in the body?
Control center
Stimulus-response model
Feedback model
Control
Are classified into two different types.
Feedback model
Feedback
Feedback systems
Feedback loop
Slows down to conserve energy and allow the human to continue living with less food.
Erythropoiesis
Monosaccharide
Metabolism
Oxytocin
What type of organism depends on external heat sources?
Endotherm
Ecotherm
Eukaryotic
All organisms
What kind of organism is a human when it comes to temperature regulation?
Ecotherm
Endotherm
Eukaryotic
Prokaryotic
Where is the temperature regulation center located in humans?
Medulla Oblongata
Cerebrum
hypothalamus
Pons
Which body type has a better survival at 15 degrees Celcius? (this is 59 degrees in Fahrenheit)
All body types
short and stocky body
No body type is better at surviving than the other at that temperature
tall and thin body
During exercise...
blood flow increases
breathing decreases
oxygen and glucose can be delivered more slowly
heart rate slightly decreases
