Blood and Heart Laborda SCF Questions and Answers 100% Verified
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Blood and Heart Laborda SCF
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Blood And Heart Laborda SCF
True or False: Scanning electron microscope allows you to see the biconcave disk shape in a 3D
dimension. - True
Whats the advantage of having a bi concave cell for RBC's? - If we were to shove large shaped
erythrocytes would end up in blocking of vessels. So it's better to have them bi concaved...
Blood and Heart Laborda SCF
True or False: Scanning electron microscope allows you to see the biconcave disk shape in a 3D
dimension. - True
Whats the advantage of having a bi concave cell for RBC's? - If we were to shove large shaped
erythrocytes would end up in blocking of vessels. So it's better to have them bi concaved and STACKED.
Bi-concave disk gives flexibility. They move in stacks in order to allow stopping of clotting.
What type of cells stem from a pluripotent stem cell? - Myeloid and Lymphoid stem cells
True or false: Leukemia is a form of leukocytosis - True
What are pluripotents in the red bone marrow called? - Hemocytoblast stem cells
The T and C cells stem from what? - Pluripotent to lymphoid stem cell then to T lymphoblast and
B lymphoblast and finally T lymphocyte and B lymphocyte.
Production of myeloid cells is completed in where? - Red bone marrow
IMPORTANT: Where does production and completion happen for the lymphoid stem cells? Why? -
The initial production is in red bone marrow but is completed in lymphatic tissues like the lymph
nodes and your spleen.
The reason why: T and B cells are used for specific defense. Only complete development when exposed
to a specific invader.
Development of all the formed elements is called what? - Hemopoiesis
What is the production of RBC's called? - Erythropoiesis
, When does the nucleus eject its nucleus for a RBC? - before or during Reticulocyte stage
Go through the process of a fully mature erythrocyte. - Pluripotent stems into a myeloid stem cell
when stimulated properly with the hormone of erythropoietin and specific levels we get differentiation
toward the erythrocyte process. The more erythropoietin the faster the process occurs. Which then
creates the proerythroblast. 4 stages occur here. The most important protein that is being produced to
allow them to do their principle job is hemoglobin. Millions and millions of hemoglobin is made about
1/3 of the cell about 300million. Reticulocyte happens (during) when nucleus is ejected as well as other
organelles. The speherical cell flattens into a biconcave disk shaped cell.
What molecule transports oxygen? - Hemoglobin
ON TEST How many RBC's are in a microliter of blood? - 5 million (4-6 million)
ON TEST How big is the average diameter of a RBC and capillaries? - 8 micrometers (um) for RBC
12-13 to 20 micrometers (um)for Capillaries
What is the most numerous blood vessel? - Capillaries
How many WBC are in a microliter? - 5-10 thousand
How many platelets are in a microliter? - less than half a million
From pluripotent to erythrocyte lasts how long? - 9-12 days
reticulocyte is like 4
What cell stage does the potential RBC enter the blood at? - Reticulocyte:
takes a few more days to become full erythrocyte.
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