Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2007ZoologyNeural Control and CoordinationActual

Which of the following is an example of negative feedback loop in humans?

Options

  1. Asecretion of tears after falling of sand particles into the eye
  2. Bsalivation of mouth at the sight of delicious food
  3. Csecretion of sweat glands and constriction of skin blood vessels when it is too hot
  4. Dconstriction of skin blood vessels and contraction of skeletal muscles when it is too cold.

Correct answer

D. constriction of skin blood vessels and contraction of skeletal muscles when it is too cold.

Step-by-step solution

When the set point of hypothalamus is disturbed by high temperature, it stimulates vasodilation and sweating while in low temperature there is vasoconstriction and shivering. Related Theory Feedback loops are used extensively to regulate secretion of hormones in the hypothalamic-pituitary axis. An important example of a negative feedback loop is seen in control of thyroid hormone secretion. The thyroid hormones thyroxine and triiodothyronine (" T₄ and T₃ ") are synthesized and secreted by thyroid glands and affect

Practice Neural Control and Coordination on Quantrex Academy →

More from Neural Control and Coordination

Muscle contraction is initiated by a signal sent by the central nervous system through the release of __________. 2026The specific receptors for neurotransmitters in a synapse are present on : 2026Which of the following is not a part of human central neural system ? 2026Match List I with List II : Choose the correct answer from the options given below : 2024Match List-I with List -II array |l|l|l|l| & List-I & & List-II A. & Schwann cells & I. & Neurotransmitter B. & Synaptic knob & II. & Cerebral cortex C. & Bipolar neurons & III. & 2024Given below are two statements: Statement I: The cerebral hemispheres are connected by nerve tract known as corpus callosum. Statement II: The brain stem consists of the medulla ob 2024The parts of human brain that helps in regulation of sexual behaviour, expression of excitement, pleaseure, rage, fear, etc. are: 2023Given below are two statements: Statement I : The nose contains mucus-coated receptors which are specialised for receiving the sense of smell and are called olfactory receptors. St 2023 Full Neural Control and Coordination list All NEET PYQs