BI 233 - Formed Elements

Where is interstitial fluid found

In between cells and muscles

Define hematocrit

Measures the percentage of red blood cells in your blood volume.

What molecule are RBC’s full of and what are their functions

Hemoglobin: gas transport protein for O2 and CO2. 1 hemoglobin = 4 O2(RBC has a lot of hemoglobin)

Define hematopoeisis

The development of a red blood cell

What are the stages of Hemotopoiesis

Hemocytoblast → Proeryhtroblast → RIbosome synthesis → hemoglobin accumulation → ejection of nucleus → reticulocyte → erythrocyte

Define reticulocyte

An immature red blood cell that has no oxygen

Bilirubin

non-iron part when RBC’s are recycled. It is waste and gets excreted through the liver. People with liver failures often experience jaundice.

What is the function of Erythropoeitin(EPO)

It is a hormone that controls eryhtropoeisis. It is made in hte kidney and liver, but mostly liver. It stimulates cell division and hemoglobin development.

When there is low blood O2, what is there is an ___ of erhtyhropoetin

increase; need more RBC

Where does eryhtropoiesis happen

In the red bone marrow