Blood! Quiz Review
The average functional lifespan of an RBC(red blood cells) is:
100-120 days
Blood normally clots in approximately _________.
3-6 minutes
Severe shock that can be fatal occurs with blood loss exceeding ________
30%
Normal blood pH falls in a range between _______ to __________
7.35-7.45
When typing a patient's blood, agglutination occurred with anti-A and anti-Rh antibodies. What is this patient's blood type?
A+
What does fibrin contribute to the process of coagulation?
Fibrin forms a meshwork that traps RBCs and forms the basis of the clot.
In a centrifuged blood sample, the bluffs coat situated between the formed elements and the plasma contains ________
Leukocytes and platelets
What blood type can a person with O negative blood receive in a transfusion?
O negative
Which of these formed elements is responsible for stopping blood?
Platelets
The immune serum used to prevent maternal sensitization to Rh antigens is _______.
RhoGAM
When antibodies bind to antigens on foreign blood types, clumping or ________ occurs.
agglutination
Substances that the body recognizes as foreign are called _______
antigens
Which formed element is the most abundant in blood?
erythrocyte (red blood cells)
What long, hairlike molecules form the basis of a clot during coagulation?
fibrin
Which of the following is characteristic of whole blood?
five times the viscosity of water
The percentage of erythrocytes in blood is known as the _________
hematocrit
If you carry the Rh antigen, you are referred to as Rh _______
positive
Donor and recipient blood types are A positive. Mixing recipient serum with donor RBCs caused agglutination. No agglutination occurred when donor serum was mixed with recipient RBCs. Is the blood safe for transfusion?
No, antibodies in the recipient's plasma are interacting with some unidentified antigen on the donor RBCs.
Which of these is a normal value for whole blood?
hematocrit of 45%
Which cell is the precursor of all types of blood formed elements?
hemocytoblast
What component of red blood cell binds and transports oxygen?
hemoglobin
What is not contained in the plasma of blood?
hemoglobin
What disorder is associated with a deficiency of clotting factors?
hemophilia
A separated sample of blood reveals the hematocrit composes 72 percent of the volume of blood while the plasma contributes 38 percent of the blood volume. The buffy coat makes up less than 1 percent of this sample. Which is likely the correct interpretation of these findings?
polycythemia
What is the basis of the ABO blood groups?
presence or absence of A and B antigens on the surface of RBCs
Where does hematopoiesis occur to produce new red blood cells?
red bone marrow
A person with type B blood can receive blood from blood type(s)
B and O
Which of the following does not correctly characterize blood?
Blood is cooler than body temperature
Molly has blood type A and her daughter has blood type B. Why can't Molly donate blood to her daughter?
Blood type B contains anti-A antibodies, which will agglutinate with type A blood.
Rh-related problems occur in pregnant Rh- women carrying an Rh+ baby.
True
Unlike erythrocytes, leukocytes contain a nucleus and the usual complement of organelles, including mitochondria.
True
What blood type has both Anti-A and Anti-B antibodies in their plasma?
Type O
Which blood type(s) can a person with blood type O receive?
Type O
universal donor blood type
Type O
What is blood serum?
blood plasma minus the clotting proteins
Erythrocytes ___________
lack a nucleus and most organelles
Which blood cells are responsible for fighting infections?
leukocytes (white blood cells)
Which organ is largely responsible for the synthesis of clotting factors?
liver
Platelets are fragments of multinucleate cells called:
megakaryocytes
The transportation of oxygen in the blood is the responsibility of _______
erythrocytes
What hormone controls the rate of erythrocyte production?
erythropoietin