Blood & its Components!.

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Presentation transcript:

Blood & its Components!

What is Blood? Blood is a connective tissue It connects many different organs and tissues in the body It has a liquid component (plasma) in which formed elements are suspended (blood cells, platelets, etc) These formed elements make blood more viscous (thick)

Constituents of Blood Plasma is the liquid component Formed elements: Red blood cells White blood cells Platelets

Constituents of Blood Plasma This is the liquid component of blood Has a slightly yellowish colour Makes up about 55% of total blood volume

Plasma

Constituents of Blood Plasma Composed of: 90% water 10% dissolved substances: Nutrients, hormones, antibodies, proteins

Constituents of Blood Plasma Function: Transport dissolved substances to cells (ex: oxygen, nutrients) and transport waste to excretory organs (ex: carbon dioxide)

Approx. 55% Formed Elements Approx. 45%

Constituents of Blood Red Blood Cells Also called erythrocytes Part of the formed elements in the blood They are the most numerous!

Constituents of Blood Red Blood Cells Their shape is a biconcave disk (a disk with indents on both sides) They don’t have a nucleus Contain hemoglobin The protein that binds to oxygen and carbon dioxide

Constituents of Blood Red Blood Cells Function: To transport oxygen and carbon dioxide

What is Blood? White Blood Cells Also called leukocytes The least common formed elements in the blood

What is Blood? White Blood Cells Characteristics: Actually transparent as opposed to white Don’t have a regular shape; can take on different shapes Have a nucleus

What is Blood? White Blood Cells Function: Provide immunity Defend against foreign bodies and disease!

White Blood Cells

What is Blood? Platelets Also called thrombocytes Characteristics: Cell fragments (little bits of cell) No nucleus Smallest of the formed elements

What is Blood? Platelets Function: Help in coagulation (blood clotting) This is important for repairing wounds which helps prevent you from bleeding out!

Workbook P. 103 (the top 2 tables) P.105 #1,2,3