Composition of Blood

Plasma

non-cellular

What’s plasma?

Blood’s liquid matrix

What percentage of plasma is blood volume?

55%

What percentage of water is plasma?

90%

What percentage of plasma solutes: gases, nutrients, proteins, electrolytes, and hormones?

10%

Erthyocytes

Red blood cells

What percentage of erythrocytes make up blood volume?

45%

What is hematocrit?

The % of blood made up by erythrocytes: higher in men

Which cell is not true cells-lack nuclei and organelles?

Erythrocytes

What are erythrocytes?

Biconcave discs

What’s erythrocytes job?

Transport oxygen from the lungs to the body cells

how many hemoglobin molecules do red blood cells contain?

250 million

What’s hemoglobin?

Protein that uses iron to bind 4 oxygen

What’s erythrocytes produced by?

Erythropoiesis in the red bone marrow

What’s the lifespan of erythrocytes?

120 days

Leukocytes

White blood cells

What percentage of leukocytes make up the blood volume?

< 1%

Are leukocytes true or not true cells?

True cells

What is the lifespan of leukocytes?

1-3 days

What’s leukocytes job?

Defense against disease

How many types of leukocytes are there? (From most to least abundant)

Neutrophils, lymphocytes, monocytes, eosinophils, and basophils

What are thrombocytes?

Platelets

What percentage of thrombocytes make up blood volume?

< 1%

Are thrombocytes true or not true cells?

Not true cells- only cell fragments

What’s the job of thrombocytes?

Clot damaged blood vessels (called Hemostasis