Biology
Grade-8
Easy

Question

Changes in the internal body chemistry like variations of , , and pH in the blood are detected by

  1. Photoreceptors
  2. Proprioceptors
  3. Nociceptors
  4. Chemoreceptors

hintHint:

Chemical stimuli can be detected by chemoreceptors detect chemical stimuli, such as chemicals that lead to the sense of smell.

The correct answer is: Chemoreceptors


    • Chemoreceptors respond to chemicals in taste and smell and in internal changes
    • Chemoreceptors are instrumental in the regulation of breathing. Blood concentrations of O2 and CO2 as well as serum pH need to be maintained within a narrow range to ensure the normal function of the body's tissues.
    • Changes in the partial pressure of O2 (PO2) are sensed primarily by peripheral O2 chemoreceptors.

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