Internal or biological clock
Internal or biological clock
A clock or a watch. They both have faces and hands, but no legs.
Pineal body (gland)
The body-clock of living beings.
The biological clock that regulates the body's daily rhythms is called the circadian rhythm. It is controlled by a cluster of cells in the brain called the suprachiasmatic nucleus, which responds to light and dark signals to help synchronize our internal body clock with the external day-night cycle. This internal clock helps regulate functions such as sleep-wake cycles, hormone release, body temperature, and metabolism.
The pineal gland, located in the brain, helps control the body's biological clock by producing melatonin, a hormone that regulates sleep-wake cycles. It responds to environmental cues such as light and darkness to help regulate circadian rhythms.
The cast of Turn Back Your Body Clock - 2006 includes: Tim Bean as himself Una Coales as Herself - Presenter
A bed. It has a headboard and a footboard, but no actual body structure.
This is a clock. The two heads refer to the two hands on a clock face, but the clock's body (base) stays still while the hands move swiftly around it to mark the passage of time.
Circadian clock gene The Clock gene not only controls the body's circadian rhythms, including sleep and wakefulness, body temperature, hormone levels, blood pressure and heart activity, it may also be a key regulator of the brain's reward system.
Because, your body ages everyday, so ,,its like a clock ,tik, tik :)