blood Flashcards
the human body contains how much blood?
5L
what are the components of blood? (and their percentages)
plasma (55%), rbc (45%), wbc (less than %1), platelets (less than 1%)
what is plasma?
the liquid that transports blood cells (rbc, wbc, platelets) nutrients, antibodies, hormones and waste produced during cellular respiration.
what happens to the urea?
it’s carried to the kidney for evacuation.
what happens to carbon dioxide?
it’s carried to the lungs for evacuation.
why do red blood cells have a biconcave shape? what would happen if they didn’t have this?
they need to be flexible in order to squeeze into the small/thin blood vessels (capilaries). if you have sickly cells they’ll be more of a banana/hook shake, this will make them get caught on the corners and form blood clots.
why do our veins appear blue?
in our body there are the bloods that pick up O2 and the ones that pick up CO2. the ones that pick up O2 turn a bright firetruck red. the ones that pick up CO2 turn a dark wine red.
what creatures have blue blood?
small spiders and lobsters.
red blood cells contain what? (a protein)
hemoglobin which is a protein that helps transport CO2 and O2 and gives the blood it’s red colour.
how long do red blood cells live for?
120 days.
what is the main job of the rbc (red blood cells)?
to deliver oxygen to the rest of the body.
do rbc do mitosis?
nope. they simply die off after 4 months. wbc eat them.
where are rbc are produced?
in your bone marrow.
what is hemoglobin?
a large protein molecule made mostly or iron.
what is it more dangerous to cut/break? an artery or vein?
an artery.
what is someone called if they don’t have functioning platelets?
a hemopheliac.
what is the circulatory system made up of?
blood, blood vessels, the heart.
what is the only liquid part of your blood?
the plasma.
c6h12o6 + 6o2 → 6co2 + 6h2o is an example of what type of reaction?
photosynthesis?
if a blood cell has only Rh antigens, what blood type is it?
o+
what’s the difference between whole blood transfusions and platelet transfusions?
platelet transfusions is only the platelets being transfused.
what is agglutination? how is it caused?
agglutination is when the blood forms clumps or thickens. it’s caused by, for example, the A antibodies in one type of blood attacking the A antigens in another type of blood.
what are the different types of vaccines?
attenuated vaccines (weakened virus), inactivated vaccines (dead virus) and vaccines from genetic engineering (made from modifying the pathogen’s DNA and keeping the non dangerous genes).
what is the lymphatic system?
the lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. the primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.
