Micaiah Achtymichuk’s 2^nd blog: Wednesday- March 10^th, 2010. 3/3

What we did today...

(Block 1)

·       We did the multiple choice and numerical response for the unit test on the Endocrine system.

·       After completing MC we worked on any uncompleted work/ tickets to the test/ male reproductive system worksheets.

(Block 2)

·       We completed the written response/short answer component for the Endocrine system.

·       After completing we worked on any uncompleted work/ tickets to the test (Mr. Blankies, HOTFF Charts...) and male reproductive system worksheets.

·       AND that is Wednesday biology double block in a nut shell folks.

Thoughts about the material:

·       After discussing the amount of sperm produced by a human male daily and amount contained in the average ejaculation, it wonder how a verial male and female could fail to achieve pregnancy...

Above and beyond (Meta- cognition):

Both women and men have hormonal cycles which determine both when a woman can achieve pregnancy and when a man is most virile. The female cycle is approximately twenty-eight days long, but the male cycle is variable. Men can ejaculate and produce sperm at any time of the month, but their sperm quality dips occasionally, which scientists guess is in relation to their internal cycle.

Furthermore, age also plays a role, especially for women.

Although women can become pregnant at any time during their menstrual cycle, peak fertility occurs during just a few days of the cycle: usually two days before and two days after the ovulation date. This fertile window, varies from woman to woman, just as the ovulation date often varies from cycle to cycle for the same woman. The ovule is usually capable of being fertilized for up to 48 hours after it is released from the ovary. Sperm survive inside the uterus between 48 to 72 hours on average, with the maximum being 120 hours (5 days).

These periods and intervals are important factors for couples using the rhythm method of contraception.

So at this answers at least part of the equation...

I got my information here: (http://en.wikipedia.org/wiki/Fertility#Human_fertility) and i found a video about the subject here... (http://www.discoverychannel.ca/Showpage.aspx?sid=16698)