Group 2-Section 19_4-19_6

Thrombolysis

What process dissolves a blood clot?

Type AB+

Which of the following blood types is considered the universal recipient?

B-

Which of the following blood types would angulate if donated to a person with blood type A+?

Type AB-

A sample reacts with anti-A and anti-B antibodies, but it does not react with anti-Rh antibodies. What is the sample's blood type?

Platelets

Hemostasis is mediated by which of the following formed elements?

Megakaryocytes

Platelets are cell fragments formed from __________.

Vascular spasms, platelet plug formation, coagulation, clot retraction, and thrombolysis

Select the appropriate pathway for the steps of hemostasis.

Coagulation

Some rat poisons contain a toxin that blocks the liver's ability to use vitamin K. Animals that consume this poison would have problems with

Antigens A and B

The ABO blood group is based on which antigen(s)?

Thrombin

What enzyme converts fibrinogen to fibin?

Factor XII contacts exposed collagen fibers.

What event initiates the intrinsic or contact pathway of coagulation?

Vascular spasms decrease blood vessel diameter to limit blood loss.

What is the function of vascular spasms during hemostasis?

Hemostasis

What process involves a series of events that minimizes the amount of blood lost from an injured blood vessel?

Vitamin K

What vitamin is necessary for certain clotting factors to operate during coagulation?

A antigens

Which antigens does a person with blood type A- have on the surface of his or her erythrocytes?

Anti-A antibodies

Which of the following antibodies does a person with type B+ blood have in their plasma?

O-

Which of the following blood types is compatible with B- during a transfusion?

Formation of thrombin

Which of the following must occur first during hemostasis?

Antibody and agglutinin

Which of the following pairs of terms can be used interchangeably

Antigens

Carbohydrate groups on the surfaces of erythrocytes determine blood type and are known as