circulatory system Flashcards
this is the fluid component of blood, 55% of the volume, carries ions, proteins, nutrients, and gases
plasma
T or F. marathon training can increase plasma volume
true
thin white layer in a centrifuge, contains white blood cells, as well as platelets. compose 1% of the blood volume
buffy coat
cell fragments that broke off special cells called megakaryocytes. technically are not cells and do not have a nucleus
platelets
technical term for blood clotting
coagulation
coagulation cascade
- clotting factors causes…
- prothrombin —–> thrombin (this causes…)
- fibrinogen —–> fibrin
a fibrous molecule that forms the skeleton of a blood clot where platelets pile on top
fibrin
platelets pile on top of fibrin to form
platelet plug
if the platelet plug does not disintegrate, it might break off and get lodged somewhere else. if this occurs in the heart, it can result in a? if it occurs in the brain it might result to a?
heart attack ; stroke
makeup 45% of the blood volume, these carry gases, specifically oxygen and carbon dioxide in the blood
erythrocytes or RBCs
the proportion of your blood that is composed by RBCs
hematocrit
the body releases this hormone from the kidneys if it wants to stimulate more erythrocyte production
erythropoietin (EPO)
when RBCs mature they eject what?
their nuclei, organelles- makes them extremely energy efficient but they cannot live very long
erythrocytes lifespan
about 120 days
where are RBCs sent for destruction
spleen
erythrocytes express sugar-coated proteins on their cell surface known as
glycoproteins
when the mother is Rh- but the fetus is Rh+, does the mother’s immune system produce antiRh antibodies?
it does. mothers are given antiRh antibodies to prevent them from making it themselves
this circulation takes oxygen-rich blood, delivers it to the body’s tissues, and then returns the blood, now depleted of oxygen, back to the heart
systemic circulation
the circulatory system through the lungs, where the blood flows through vessels that run adjacent to the air sacs, or alveoli, of the lungs
pulmonary circulation
