What is an endogenous rhythm?

Endogenous rhythm is the term used in describing biological processes which alter periodically although external conditions remain constant. The movement of a pendulum is analogous to a biological endogenous rhythm. As in pendular movements, biological systems also require an impulse to set them in motion.

How are endogenous rhythms generated?

Key Facts on Circadian Rhythms Circadian rhythms are internally generated by an endogenous circadian timekeeping system. The master circadian clock in mammals is located to the SCN of the hypothalamus. The molecular basis of circadian rhythm generation involves the interplay of the protein products of clock genes.

Is circadian rhythm endogenous or exogenous?

Although circadian rhythms are endogenous, they are adjusted to the local environment by external cues called zeitgebers (German for “time givers”), which include light, temperature and redox cycles.

What is an exogenous rhythm?

Exogenous rhythm refers to environmental factors that influence natural circadian rhythm cycles within a twenty-four period including light exposure, temperature, ambient noise, regular diet, different time zones, traumatic events, injuries, and occupational stress.

What is endogenous in plants?

Definition of endogenous 1 : growing or produced by growth from deep tissue endogenous plant roots.

What is endogenous rhythm Why is it important in plant growth and development?

Plants have endogenous biological clocks that allow organisms to anticipate and prepare for daily and seasonal environmental changes and increase their fitness in changing environments.

What is an endogenous biological clock?

The endogenously generated rhythms have a period of about a day (e.g. 23~25-hour cycles), and thus the internal clock is referred to as a “circadian” (about a day) clock.

What is the difference between endogenous and exogenous rhythms?

Endogenous rhythms come from within and are regulated by the organism itself, for example the body temperature cycle. Exogenous rhythms are the result of external factors, such as a change in the seasons, or the transition from day to night.