Hematology Lecture Flashcards
A life sustaining fluid which circulates through the heart and blood vessels
Blood
FORMED ELEMENTS
Includes erythrocytes, leukocytes, platelets and plasma
is the fluid that remains after coagulation has occurred and clot has formed
serum
is the liquid portion of unclotted blood
plasma
Mesoblastic Stage chief site
yolk sac
Mesoblastic Stage start day
19th day of Fetal Development after Fertilization
Mesoblastic stage Predominant cell
PRIMITIVE ERYTHROBLAST (PE)
will later differentiate into Adult Erythrocytes
NORMOBLASTIC CELL
Hemoglobin present in mesoblastic stage
Portland, Gower 1, Gower 11
a form of hemoglobin existing at low levels during embryonic and fetal life, composed of two zeta chains and two gamma chains. (2 zeta, 2 gamma)
portland
is a form of hemoglobin existing only during embryonic life, and is the primary embryonic hemoglobin. It is composed of two zeta chains and two epsilon chains, and is relatively unstable, breaking down easily. (2 zeta, 2 epsilon)
gower 1
is a form of hemoglobin existing at low levels during embryonic and fetal life. It is composed of two alpha chains and two epsilon chains, and is somewhat unstable, though not as much as hemoglobin Gower 1. (2 alpha, 2 epsilon)
gower 2
is a continuous, regulated process of blood cell production
hematopoiesis
Hepatic stage chief site
Liver
hepatic stage starts
5th to 7th gestational weeks
hepatic (Hematopoiesis during this phase occurs)
extravascularly
The major site of T cell production, kidney and Spleen which produces B cells.
thymus
The first fully developed organ in the fetus
thymus
medullary stage chief site
Bone marrow
start of medullary stage
4th and 5th month of fetal development
at the end of the 6th month _______ is the end of hematopoiesis
bone marrow
1st bone to demonstrate marrow hematopoietic activity
clavicle