how is it collected
collect blood from vein since it is low pressure blood vs artery
after being placed in a centrifuge, the blood separates based on weight
components of blood
- plasma is roughly half of blood
- red blood cells are about 45% of blood
- leukocytes and platelets are less than 1% of blood
is a solvent that helps dissolve substances (polar), adds volume to blood (it is liquid, it takes up more space that just cells) creates high pressure.
Maintain osmotic gradients and fights infection. Maintain blood concentration (albumin). Fight infection (antibodies), clotting (fibrinogen). Each protein has a unique structure that allows it to perform their function.
: are ionic compounds. they separates into component ions. ex. Calcium for muscle contraction, Na, K, CL for nerve function. The water carries them since they have charges and water attracts since it is polar
oxygen, for cell respiration (reactant), carbon dioxide (product). these don’t have charges but you can still carry in small amounts
energy (carbohydrates and lipids that have a lot of potential energy), build structures (proteins, lipids which are building blocks)
products of chemical reactions (can be harmful to cells),
communicate messages from cell to cell (cells that respond have receptors for the hormone). can move through membranes or attach to receptors
Red blood cell (RBC). When mature, lose their nucleus (biconcave shape)
for more flexibility to go through capillaries and
more surface area to transport oxygen. -Survive about 120 days. Then, removed by
macrophages in the liver and spleen
-More produced when levels of oxygen are low
RBC contains 280 millions of Haemoglobin - red pigment (iron attaches to oxygen).
Four molecules of oxygen per molecule of hemoglobin
Lack of iron: iron-deficiency anemia
White Blood Cell (WBC). has nucleus, not red, live for only a few days. There are some called granular and agranular leukocytes which contain granules with proteins
Leukocyte that is also produced by lymphatic system. - lymphocytes remember the virus they fought since evolutionarily, there is something in your environment that is dangerous so the lymphocytes remember the virus since they can fight them faster. Produce specific Antibodies to fight viruses and infection
largest leukocyte called macrophage when it leaves the vessel. phagocytosis of bacteria and old cells? Activates lymphocytes.