Ch 18 Quiz

The life span of an erythrocyte is about ___ days.

120

Blood helps regulate the ph and the temperature of the body.

True

During hemopoiesis, the lymphoid line forms lymphocytes only.

True

Platelets are formed elements

True

Which are the least numerous of the leukocytes?

basophils

The main function of leukocytes is to

defend against pathogens

The most numerous of the formed elements are the

erythrocytes

The type of leukocyte that is very active during a bacterial infection is

neutrophil

Plasma makes up about ___ percent of the centrifuge sample of a whole blood.

55%

Which is mostly closely approximates the percentage of water in plasma by weight?

92%

Which is going to result in significant agglutination?

Donor is type AB, recipient is type B

Hemoglobin found in erythrocytes is able to chemically attached to

both oxygen and carbon dioxide

It is more appropriate to call and erythrocytes formed element rather than a cell is that erythrocytes

lack a nucleus and organelles

Whic leukocyte are derived from the myeloid line?

neutrophils, basophils, eosinophils, and monocytes

Which leukocytes are granulocytes?

neutrophils, eosinophils, basophils

Buffy coat in a centrifuged blood sample is composed of

platelets and leukocytes

If agglutination occurs after a blood transfusion, it may indicate

the wrong blood type was used

When blood is centrifuged and its components separate, the bottom of the tube holds the

erythrocytes

The agglutinogens (or antigens) that determined e a t o and RH blood types are

found on the surface of erythrocytes

Which are the characteristics of type A blood?

has anti B antibodies has surface antigen A on its erythrocytes will agglutinate with blood type B