Anatomy: Blood Unit

the functions of blood

transport, regulation, and protection

what four objects does blood transport throughout the body?

oxygen, nutrients/glucose, waste (Co2 removed from cells, N2 removed from kidneys), hormones

What regulatory functions does blood have?

• contains buffers (helps regulate ph)

• adequate fluid volume

• regulates body temp by obsorbing + distributing heat

what 2 ways does blood protect us?

1) prevents blood loss: platelets and plasma proteins initiate clot formation, halting blood loss

2) prevents infection: white blood cells defend the body against bacteria

blood is a tissue that contains different types of blood cells and a fluid matrix called what?

plasma and formed elements

when you spin a sample of blood in a centrifuge it gets divided into 3 regions. what is contained in the 3 regions from top to bottom?

top: plasma

med: buffy coat

bottom: erythocytes

what property of water allows plasma to perform its transportation function?

it’s role as a universal solvent

Erythrocytes is the technical name for what type of blood cell?

Red Blood Cells (RBC’s)

what is the function of the protein spectrin in RBCs?

transporting respiratory gases (oxygen + Co2)

what is the function of the protein hemoglobin in RBC’s?

transports oxygen

what 3 structural characteristics make RBS’s ideal for transporting gases?

• it’s small disc shape

• its over 97% hemoglobin, the molecule that binds/transports resp. gases

• doesn’t consume any oxygen it carries

what element is found within each heme group of hemoglobin that binds the oxygen for transport?

an iron ion

blood vessels

veins and artieries

veins

takes blood towars the hearttowards

artieries

takes blood away from the heart

capillaries

smallest blood vessels, where gas exchange occurs

blue blood vessels

de-oxygenated blood

red blood vessels

oxygenated blood