Correct Answer: C

Rationale: The correct answer is C. Influenza immunization works by introducing a weakened or inactivated form of the virus into the body, allowing the immune system to recognize it as foreign. This recognition triggers the production of antibodies specific to the virus.
Choice A is incorrect as the virus in the vaccine does not remain in the body until the end of the season.
Choice B is incorrect as an attenuated virus does not cause immune system suppression but rather stimulates an immune response.
Choice D is incorrect because the vaccine does not stay at the injection site but rather prompts a systemic immune response throughout the body.

Correct Answer: B

Rationale: The correct treatment for patients with hemophilia A is Factor VIII replacement. Hemophilia A is a genetic disorder where there is a deficiency in clotting factor VIII.
Therefore, replacing this factor is crucial in managing and preventing bleeding episodes.
Choice A, chemotherapy, is not the correct treatment for hemophilia A.
Choice C, heparin administration, is not recommended as it can further increase the risk of bleeding in patients with hemophilia.
Choice D, bone marrow transplant, is not a standard treatment for hemophilia A.

Correct Answer: A

Rationale: The correct answer is A: Ventilation. Ventilation is the process of moving air into the lungs and distributing it to the alveoli for gas exchange.
Choice B, Aeration, is not the correct term for this specific process.
Choice C, Enclosure vapor, is not related to the movement of air into the lungs.
Choice D, Residual volume, refers to the amount of air left in the lungs after maximal expiration and is not the process of moving air into the lungs.

Correct Answer: B

Rationale: Disseminated intravascular coagulation (DI
C) is characterized by simultaneous clotting and bleeding throughout the body. This imbalance in the body's clotting system leads to the formation of blood clots in small blood vessels, which can consume clotting factors and platelets, ultimately leading to excessive bleeding.

Choices A, C, and D are incorrect because they do not describe the characteristic feature of DIC, which involves both clotting and bleeding.

Correct Answer: B

Rationale: A pulmonary embolism is commonly caused by a blood clot that originates in the venous system of the lower extremity and travels to the lungs, blocking blood flow. This clot is known as a venous thromboembolism. An autoimmune disorder (
Choice
A) is not typically associated with pulmonary embolism. Intracranial pressure (
Choice
C) refers to pressure inside the skull and is unrelated to pulmonary embolism. Hypotension (
Choice
D) is low blood pressure and is not a common cause of pulmonary embolism.