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Which of the following is an example of negative feedback loop in humans?
Options
(a) Secretion of tears after falling of sand particles into the eye.
(b) Salication of mouth at the sight of delicious food
(c) Secretion of sweat glands and constriction of skin blood vessels when it is too hot.
(d) Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold.
Correct Answer:
Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold.
Explanation:
When the set point of hypothalamus is distributed by high temperature, it stimulates casodilation and sweating while in low temperature there is vasoconstriction and shivering.
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Topics: Locomotion and Neural Control
(33)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Lichens indicate SO2 pollution because they
- What is the number of chromosomes in aleurone layer if 10 numebr of chromosomes
- GnRH a hypothalamic hormone needed in reproduction acts on
- Acute vision is present in
- The difference between RNA and DNA is because of
Topics: Locomotion and Neural Control (33)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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