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Human Blood Composition and Clotting

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Questions and Answers

Match the following blood analysis terms with their definitions:

Hematocrit (PCV) = An estimate of the volume of packed erythrocytes per unit volume of blood. Clot = What occurs if blood is removed from the circulatory system. Serum = Clear yellow liquid that separates from the clot. Anticoagulant = Material that prevents blood from clotting when collected.

Match the following blood analysis processes with their outcomes:

Blood removal = It will clot. Blood with anticoagulant = It will not clot. Centrifugation of anticoagulated blood = It will separate into about 3 layers. Separation of clot = Results in formed elements and serum.

Match the layers formed after centrifugation of anticoagulated blood with their composition:

Lowest red layer = Composed of erythrocytes and constitutes about 40-45%. Second layer = Translucent, yellowish, supernatant plasma. Buffy coat = Thin layer between erythrocytes and plasma. Clot = Contains formed elements and serum.

Match the components of blood analysis with their respective characteristics:

<p>Erythrocytes = Main component in the lowest layer. Plasma = Contains water, electrolytes, and proteins. Buffy coat = Contains white blood cells. Serum = Remains after clotting and contains no clotting factors.</p> Signup and view all the answers

Match the outcomes of specific blood collection methods:

<p>Blood collected without anticoagulant = Will clot. Blood collected with anticoagulant = Will not clot. Blood centrifuged without anticoagulant = Will separate into plasma and formed elements. Blood centrifuged with anticoagulant = Will separate into about 3 layers.</p> Signup and view all the answers

Study Notes

Hematocrit (PCV)

An estimate of the volume of packed red blood cells per unit volume of blood.

Blood Clotting

Blood removed from the circulatory system will clot.

Clot Composition

Clots contain formed elements and clear yellow liquid called serum, that separates from the clot.

Anticoagulants

Blood collected in a tube containing an anticoagulant will not clot.

Blood Centrifugation

Blood with an anticoagulant, when centrifuged, will separate into about 3 layers.

Lowest Red Layer Composition

The lowest red layer is composed of erythrocytes and makes up about 40-45% of the blood.

Second Layer Description

The second layer is translucent, yellowish and is the supernatant plasma.

Buffy Coat

The thin layer between the two layers is known as the buffy coat.

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Description

Explore the fundamentals of human blood composition, focusing on hematocrit, clotting mechanisms, and the role of anticoagulants. This quiz covers the structure of blood layers, including erythrocytes and plasma, to enhance your understanding of blood's biological function.