George comes on a vacation to India from the $U.S.$ The long journey disturbs his biological system and he suffers from jet lag. What is the cause of his discomfort?

  • A
    Disruption of the circadian rhythm
  • B
    Excessive secretion of adrenaline
  • C
    Deficiency of insulin
  • D
    Overproduction of thyroxine

Explore More

Similar Questions

....... plays a very important role in the regulation of a $24$ hours rhythm of our body.

The hormone $Melatonin$ is produced by the:

Melatonin is secreted by the . . . . . . .

Select the correct match regarding the source and function of the hormone.

"Pinealocytes" are found in which of the following?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo