What are some cycles in the human body?

Question

I have to do a chart for science. What are a few cycles in the human body? Something that is a continuous process. I've already got menstrual. What else? I can't think of any more. Thanks!!!

Answer 1

Circulation? Respiration? Much shorter, granted, but I'd still consider them cycles.

Answer 2

Good God, your a girl and you forgot all about the Menstrual Cycle?  That's pretty hard to forget.......

And how about the life cycle.....from birth to death......from puberty through adolescence; teen to adult; middle-aged to old age.......

Answer 3

digestion. blood flow.  

Answer 4

breathing, digestion, blood circulation. hair growth? just a few suggestions

Answer 5

Krebs Cycle- (cell respiration) it takes the sugars from food and oxygen to make ATP (energy)

Mitosis (Cell reproduction)- the process of cells splitting to make new cells.

Meiosis (reproductive cell reproduction)- the same as mitosis, but doubly long and for sperm/eggs.

There are charts/animations all over the internet for great charts.  Hope this helps.

Answer 6

The circadian (spelling) cycle that is the day and night cycle.  Depends on the amount of daylight.  Include jet lag and all that.

Digestion is a cycle of intake and outgo.

Seasons can be a reason for cycles in some people.

Ah well, can't think of anything.  Brain clog.