Body rhythms and circadian · Physiology

Light influences circadian rhythm primarily through which pathway?

  1. Retina projecting to the lateral geniculate body
  2. Retina projecting to the superior colliculus
  3. Retina to suprachiasmatic nucleus
  4. Optic nerve directly to the pineal gland
Show answer and explanation

Correct answer: Retina to suprachiasmatic nucleus

Light information from the retina is transmitted directly to the suprachiasmatic nucleus. This pathway allows light to reset the circadian clock.

Difficulty: Medium Question 3 of 20

Practice all 20 Body rhythms and circadian questions

Keep practicing

More Body rhythms and circadian questions