Which one of the following is an example of a negative feedback loop in humans?
Which one of the following is an example of a negative feedback loop in humans?
The correct option is B Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold
The correct option is B
Explanation of the correct option:
- When the body's usual temperature drops, blood vessels in the human body begin to constrict in order to retain heat.
- The body begins to produce more heat as skeletal muscles begin to contract, which causes a shivering sensation.
- Human skeletal muscles and skin blood vessels contract when it is too cold, which is an illustration of a negative feedback loop.
- A reaction that tends to lose function is negative feedback.
- Mostly taking place in reaction to stimuli.
- It happens when a change in a variable prompts a reaction that undoes the original change.
Explanation of the incorrect option:
Option A :
The process of mouth-watering due to the presence of delicious food is known as salivation and it is a neural process.
Option C :
This happens because of vasodilation which leads to lead blood flowing into the skin and more heat being lost to the environment.
Option D :
To maintain the smoothness of the eye and glands present above the eyes release the tear(fluid).
Final Answer: Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold is an example of a negative feedback loop in humans.
Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold
The correct option is B
Explanation of the correct option:
- When the body's usual temperature drops, blood vessels in the human body begin to constrict in order to retain heat.
- The body begins to produce more heat as skeletal muscles begin to contract, which causes a shivering sensation.
- Human skeletal muscles and skin blood vessels contract when it is too cold, which is an illustration of a negative feedback loop.
- A reaction that tends to lose function is negative feedback.
- Mostly taking place in reaction to stimuli.
- It happens when a change in a variable prompts a reaction that undoes the original change.
Explanation of the incorrect option:
Option A :
The process of mouth-watering due to the presence of delicious food is known as salivation and it is a neural process.
Option C :
This happens because of vasodilation which leads to lead blood flowing into the skin and more heat being lost to the environment.
Option D :
To maintain the smoothness of the eye and glands present above the eyes release the tear(fluid).
Final Answer: Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold is an example of a negative feedback loop in humans.
