Internal Clock Biology Definition. Glossary of biology terms. Time clocks made their first appearance in offices sometime between 1910 and 191563 advertisements of time-clock manufacturers explained that a prompt employee was a profitable employee64 interestingly although nonagricultural.
We all have an internal clock in our brain that tells us what biological time of day it is says Ken Wright a professor at the University of Colorado and director of a sleep lab. Our body clock our internal clock is linked to the 24-hour day Sure it does wonders to screw with your internal clock but until school starts and internal clocks matter its bliss To coax your internal clocks forward Block and Menaker advise that beginning a day or two before a trip you adjust your meal times to match. The body clock or circadian clock is an internal clock that keeps track of time.
The American Heritage Student Science Dictionary Second Edition.
A system in the body that controls when a person needs to sleep eat etc. Weve been driving since 6 am. See also circadian rhythm. The internal clock in the body of a human or animal that regulates sleep hunger and other biological functions.