When referring to the circadian rhythm, which of the following reflects the correct order of processing?
A)retina, optic nerve, suprachiasmatic nucleus
B)retina, pineal gland, hypothalamus
C)optic nerve, retina, suprachiasmatic nucleus
D)pineal gland, retina, optic nerve

Question

Quizplus · Accepted Answer

The correct order of processing for the circadian rhythm is in the pathway of the information from the retina to the suprachiasmatic nucleus (SCN) via the optic nerve. The retina detects changes in light, then sends this information to the SCN, which acts as the "master clock" in the brain, regulating the sleep-wake cycle and other physiological functions. The pineal gland is also involved in the circadian rhythm, but it receives signals from the SCN, not directly from the retina. Therefore, option A is the correct answer.

When Referring to the Circadian Rhythm, Which of the Following