Working of human biological clock

Aug 03, 2020 12:24 | Health & Religion

How Human Biological clock works

 It is an innate mechanism that controls the physiological activities of an organism which change on a daily, seasonal, yearly, or other regular cycle.
 “ biological clock ” is located in two tiny structures called the suprachiasmatic nuclei (SCNs), located in the left and the right hypothalamus and bordering on the third ventricle. The neurons of these two nuclei are among the smallest in the brain.

Sleep-wake and other daily patterns are part of our circadian rhythms, (circum means "around" and dies, "day") which are governed by the body's internal or biological clock. The body's master clock, or SCN, controls the production of melatonin, a hormone that makes you sleepy.

 The pineal gland, conarium, or epiphysis cerebri, is a small endocrine gland in the brain of most vertebrates. The pineal gland produces melatonin. From the optic nerve of the eye, light travels to the SCN, signaling the internal clock that it is time to be awake.

Menopause, or the cessation of menstrual periods, generally occurs in the 40s and 50s and marks the cessation of fertility, although age-related infertility can occur before then. The relationship between age and female fertility is sometimes referred to as a woman's "biological clock."



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