00:01
So this question gives you two models.
00:02
One is the hematocrit, critical thinking question.
00:06
Blood can be separated into centrifuge, in a centrifuge, into plasma and form element.
00:14
So based on a model that you saw on the left, what are the form elements? so basically the form elements are all the cells and fragment that suspended in the plasma.
00:29
So if you look all the components, the centrifuge blood sample has plasma which take about 55 % and the two other components will be red blood cell and buffy coat which is white blood cell and platelet.
00:45
So form element basically are those cells that other than plasma.
01:21
So these are the form elements.
01:26
Second question, about what percentage of a typical blood sample is composed of white blood cell and platelet.
01:35
So from the model you can see that plasma is around 55 % and red blood cell rbc is around 45%.
01:57
So they add up almost to 100%.
02:01
This tells us that the white blood cell which is very little is less than 1%.
02:10
So majority of the space are red blood, majority of the cell or blood is made of plasma and red blood cell.
02:30
So only very small portion is made of white blood cell and platelet.
02:36
Now let's take a look at model number two.
02:38
So the model two show you a morphology of red blood cell.
02:53
As a group come up with a description of shape of red blood cell.
02:56
So the red blood cell obviously look like a button shape and it's not just round and you have some unique feature...