Biology II - Cardiovascular System: Components of Blood

Biology II

what are the 4 components of blood

thrombocytes, erythrocytes, leukocytes, and plasma

what is another name for thrombocytes

platelet cells

what percent of bloods volume is thrombocytes

<1%

are thrombocytes true cells

no, they are only cell fragments

what do thrombocytes do

help to clot damaged blood vessels (called hemostasis)

what make up the buffer coat

thrombocytes and leukocytes

what is another name for leukocytes

white blood cells

what percent of bloods volume is leukocytes

<1%

are leukocytes true cells

yes

what is the lifespan of leukocytes

1-3 days

what are leukocytes job

fight infection

how many main types of leukocytes are there (name them)

5 main types (from least abundant to most): neutrophils, lymphocytes, monocytes, eosinophils, and basophils

what is plasma

bloods liquid matrix

is plasma cellular or non-cellular

non-cellular

what percent of bloods volume is plasma

55%

how much of plasma is water

90%

what is the other 10% of plasma

solutes, such as gases, nutrients, proteins, electrolytes, and hormones

what is another name for erythrocytes

red blood cells

how much of bloods volume are erythrocytes and what is this term

45%

hematocrit: the % of blood made up by erythrocytes; higher in males

are erythrocytes true cells

no, they lack a nucleus and organelles

what are erythrocytes shape

biconcave discs

what are erythrocytes job

transport oxygen form the lungs to the body cells

what is hemoglobin and how many hemoglobin molecules does each red blood cell contain

hemoglobin is a protein that uses iron to bind 4 oxygen (gives the redish color)

250 million molecules per cell

what are erythrocytes produced by and where

erythropoiesis in the red bone marrow

what is the lifespan of erythrocytes

120 days