Chapter 19 : Blood Flashcards

1
Q

thrombopoietin

A

a hormone produced by the liver that stimulates the formation of platelets from megakaryoctyes

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2
Q

each oxygen molecule picked up from the lungs is bound to an ______

A

iron ion

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3
Q

hemoglobin releases

A

oxygen

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4
Q

hemoglobin

A

a pigment that gives blood its red color

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5
Q

healthy adult male has _____RBC per microliter

A

5.4 million

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6
Q

multipotent stem cells aka hemocytoblasts

A

differentiate

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7
Q

components of blood percentage

A

blood plasma = 90% water
blood plasma proteins = 7% albumins, fibrinogen, globulins
other solutes = 1.5%

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8
Q

hematocrit

A

percentage of total blood volume occupied by RBCs

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9
Q

Platelets

A

the final type of formed element, are fragments of cells that do not have nucleus
release chemicals that promote blood clotting

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10
Q

a significant drop of hematocrit =

A

anemia

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11
Q

anemia

A

lower than normal number of RBCs

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12
Q

polycythemia =

A

percentage of RBCs is abnormally high

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13
Q

blood plasma

A

straw colored liquid

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14
Q

RBCs

A

aka erythrocytes transport O2 from lungs to body cells and deliver CO2 from body cells to lungs

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15
Q

hemopoiesis

A

process where formed elements of blood develop

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16
Q

megarkayocytes produce and are the source of

17
Q

granulocytes

A

neutrophils
basophils
eosinophils

18
Q

agranulocytes

A

monocytes
lymphocytes

19
Q

erythropoitein

A

increases the number of red blood cell precursors

20
Q

erythropoiesis

A

production of RBC’s

21
Q

reticulocyte

A

maturing RBC that ejects nucleus

22
Q

WBCs

A

have nuclei and organelles

23
Q

leukocytosis

A

increase in WBCs

24
Q

leukopenia

A

decrease in WBCs

25
chemotaxis
phenomenon where different chemicals released by microbes and inflamed tissues attract phagocytes
26
megakaryocytes
huge cells that fragment to many pieces known as platelets
27
how many WBCs per microliter
5,000-10,000 most live a few days or hours
28
hemorrhage
loss of large amount of blood from vessels
29
hemostasis
a sequence of responses that stops bleeding
30
blood serum =
blood plasma minus clotting proteins
31
prothrombinase converts prothrombin into
thrombin
32
thrombin converts fibrinogen into
fibrin
33
Ca2+ and platelet phospholipids can activate
Factor X
34
tissue factor
a tissue protein that leaks into the blood to initiate prothrombin
35
agglutination
is not the same as blood clotting it is the clumping of the RBCs
36
hemolysis
leaky RBCs
37
38