2006-09-25 11:09:00 · 8 answers · asked by chocolataya_rose_84 3 in Science & Mathematics ➔ Biology
It's a genetic determining factor, RBC are produced in the bone marrow after birth both for men and women, the hormones and growth factors such as interlukin-1, fibronectin, etc specifies the fate of the multipotent cell. the maturation of RBC is is controlled by the amount of iron being co-oportaed into haemoglobin, when the concentration of HB is high enough this acutally inhibits the expression of certain proteins being produce and the cell will leaves from the stromal cells into the blood stream acting as a matured RBC. the genetic difference betweem men and women is mainly the sex chromosome for which men have XY and women have XX, the Y chromsome might have certain effects on this blood production process hence effecting the concentration of RBC in circulating blood. there are a lot more to explain, but i am feeling sleepy right now, so i will stop here.
2006-09-25 11:10:29 · answer #1 · answered by lippy19850528 3 · 1⤊ 1⤋
Mainly due to the presence of testosterone in males. The hormones affects the oxygen demand properties of males hence the need for the kidney to release erythropoietin.
2015-06-16 09:11:30 · answer #2 · answered by Richie 1 · 0⤊ 0⤋
because girls lose some of their blood cells every time they have their period and guys dont so thats why they have more blood cells than we do
2006-09-25 11:17:42 · answer #3 · answered by Life can be amazing. 2 · 0⤊ 1⤋
due to the production of testosterone in male
2016-04-28 13:05:32 · answer #4 · answered by MUHAMMAD 1 · 0⤊ 0⤋
It's cause women lose all of theirs when they're on their rag.
2006-09-25 11:12:32 · answer #5 · answered by Cyrus 4 · 2⤊ 1⤋
CAUSE THE CRIMSON TIDE COMES INTO EFFECT
2006-09-25 13:24:44 · answer #6 · answered by Anonymous · 0⤊ 1⤋
We don't menstrate
2006-09-25 11:16:21 · answer #7 · answered by doggiebike 5 · 0⤊ 1⤋
No period!
2006-09-25 11:14:53 · answer #8 · answered by Anonymous · 0⤊ 1⤋