A&P Unit 6

Which of the following statements does not describe the adaptive immune response?

It occurs immediately after the body is challenged by foreign material.

The only complete elements are?

Leukocytes

Which of the following is/are the most specific internal defense against disease?

T cells

Which of the following materials is NOT required for erythropoiesis?

Vitamin C

The initial effect of a mismatched blood transfusion is?

agglutination of foreign red blood cells

What protein involved in coagulation provides the activation for the final step in clotting?

thrombin

The extrinsic pathway of blood clotting is triggered by?

tissue fator

The function of thrombocytes is?

to aid in blood clotting

Humoral immunity is most effective against?

bacteria in body fluids

Which antimicrobial protein triggers inflammation?

complement

The only T cells that can directly attack and kill other cells are the

cytotoxic T cells

The redness and heat of an inflamed area are due to a local hyperemia caused by ________.

vasodilation

A cellular component of the innate defenses includes ________.

natural killer cells

When a person has an acute bacterial infection, which type of leukocyte increases in number?

neutrophils

Which of the following leukocyte is not correctly matched with its function?

neutrophils: produce antibodies

Health workers working with diphtheria commonly receive a serum with antibodies against the pathogen. What type of immunity would this be?

passive, artificial immunity

The end product of both the intrinsic and extrinsic pathways is?

prothrombin activator

Which type of chemical induces fever?

pyrogens

What types of antigen do mature T cells normally not recognize?

self-antigens

Which of the following provides a first line of defense against pathogens?

skin and mucous membranes

Why are children given vaccinations?

so that they will develop antibodies against various disease-causing pathogens

Which of the following is not a functional characteristic of leukocytes?

erythropoiesis

Which of the following statements is true? A person with type AB blood produces both anti-A and anti-B antibodies (agglutinins)

A: A person with type AB blood produces both anti-A and anti-B antibodies (agglutinins). B: Type O blood can safely be given to recipients with type B blood. C: Type A blood can safely be given to recipients with type B blood. D: A person with type O blood produces both type A and type B antigens (agglutinogens). B

Which ABO blood type is considered to be the universal recipient?

AB

Which of the following is NOT a function of blood?

Hormone production

In a centrifuged sample of blood, what should NOT be in the plasma portion of the sample?

Platelets

Which type of leukocyte provides protection against parasitic worms?

eosinophil

Which of the formed elements is present in the greatest concentration?

erythrocytes

Which plasma constituent is the main contributor to clotting?

fibrinogen

Which of the following is NOT a characteristic of the innate defense system?

it provides immunological memory