Chapter 13 Midterm 3 Flashcards
What is the origins of biological rhythms?
The earth has a tilt- results in seasons
the earth has a rotation- causes days and nights
What are biorhythms?
inherent timing mechanisms that controls and starts various biological processes
What are biorythims linked to?
the origins of biological rhyms the days and seasons cycles
How are animals regulated by biorhytms? What do they do in response to biorhytms?
animals will migrate to the artic in summer for more food production
Are animals near the poles or near the equatorial regions more effected by seasonal chnages?
Near the poles, sun stays constant in equatorial regions
What are two kinds of biorhytms?
circadian biorhythms and circannual biorhythms
What biorhyms are humans dominated by?
the circadian rhythm of daylight and night
What does the biorhythm of daylight effect?
Pulse rate, blood
pressure, body
temperature, rate of cell
division, blood cell count,
alertness, urine
composition, metabolic
rate, sexual drive, feeding
behavior, responsiveness
to medications
Does biorhytm just effect animals?
no! effects plants too, leaves move in a continuous sin wave according to time
Why do we have color vision?
to see everything in the day
When are we most alert?
at 10 am
What is an ultradian biological rhythm?
less than a day
What is an infradian biological rhythm?
more than a day, ex periods
How do we know rats are nocturnal?
even when there was no light stimulation, the rat is still running at night hours
What is our background as mammals? What is our background as apes? How do they conflict?
We are noctural, apes diurnal so we’re diurnal
When do we have deepest sleep?
at 2 am
When do we have the lowest body temp?
4:30 am
When do we have the highest blood pressure increase?
at 6:30 am
When does the distribution of melatonin stop?
at 7:30 am
When do we have best coordination?
at 2:30 pm
When do we have fastets reactiont ime?
3:30
When do we have most efficient muscles?
at 5
When do we have highest blood pressure?
6:30 pm
When do we have highets body temp?
at 7