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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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- Compare the gametophytes of the bryophytes and vascular plant
- The greatest biomass of autotraphs in the worlds oceans is that of
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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
- A non proteinaceous enzyme is
- Compare the gametophytes of the bryophytes and vascular plant
- The greatest biomass of autotraphs in the worlds oceans is that of
- Which one of the following hormones though synthesised else where is stored and released
- Industrial melanism is an example 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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