Adaptive Immune System Quizlet

Adaptive Immune System Quizlet Related

Review Adaptive Immune System Quizlet related questions and content

Which complement components are primarily involved in Type III hypersensitivity?

  • A. C1 and C4
  • B. C3a and C5a
  • C. C5b and C6
  • D. C2 and C7
Correct Answer: B

Rationale: The correct answer is B: C3a and C5a. In Type III hypersensitivity reactions, immune complexes form and deposit in tissues, leading to complement activation. C3a and C5a are anaphylatoxins released during complement activation, causing inflammation and tissue damage in Type III hypersensitivity.

Rationale:
A: C1 and C4 are primarily involved in Type I hypersensitivity reactions.
C: C5b and C6 are part of the membrane attack complex in the classical pathway of complement activation, not specific to Type III hypersensitivity.
D: C2 and C7 are involved in the classical pathway of complement activation but not directly implicated in Type III hypersensitivity reactions.

You may also like to solve these questions

What is the prevalence of sarcoidosis in Ireland?

  • A. One of the lowest globally
  • B. Among the highest globally
  • C. Similar to the global average
  • D. Extremely rare
Correct Answer: B

Rationale: The correct answer is B: Among the highest globally. Sarcoidosis prevalence in Ireland is relatively high compared to other regions. This is due to genetic factors, environmental influences, and possibly healthcare practices. Sarcoidosis rates vary worldwide, with Ireland being noted for its higher prevalence. Choices A, C, and D are incorrect because Ireland's sarcoidosis prevalence is not among the lowest globally, similar to the global average, or extremely rare.

The patient’s wound is not healing, so the health care provider is going to send the patient home with negative pressure wound therapy or a “wound vac” device. What will the caregiver need to understand about the use of this device?

  • A. The wound must be cleaned daily.
  • B. The patient will be placed in a hyperbaric chamber.
  • C. The occlusive dressing must be sealed tightly to the skin.
  • D. The diet will not be as important with this sort of treatment.
Correct Answer: C

Rationale: Negative pressure wound therapy requires a secure seal around the wound to ensure effective suction and removal of exudate, promoting granulation tissue formation.

The nurse is presenting a community education program related to cancer prevention. Based on current cancer death rates, the nurse emphasizes what as the most important preventive action for both women and men?

  • A. Smoking cessation
  • B. Routine colonoscopies
  • C. Protection from ultraviolet light
  • D. Regular examination of reproductive organs
Correct Answer: A

Rationale: Smoking cessation is the most significant preventive action because smoking is a leading cause of preventable cancer deaths.

Which T cell type helps activate B cells?

  • A. Cytotoxic T cells
  • B. Helper T cells
  • C. Regulatory T cells
  • D. Memory T cells
Correct Answer: B

Rationale: The correct answer is B: Helper T cells. Helper T cells play a crucial role in activating B cells by releasing cytokines that stimulate B cell proliferation and differentiation into plasma cells, which produce antibodies. Cytotoxic T cells (A) are involved in directly killing infected cells. Regulatory T cells (C) suppress immune responses. Memory T cells (D) are responsible for maintaining immunological memory for future responses. Thus, Helper T cells are the key cell type that helps activate B cells.

What type of cell is responsible for carrying oxygen and carbon dioxide in the body?

  • A. Red blood cell
  • B. White blood cell
  • C. Platelet
  • D. Hematocrit
Correct Answer: A

Rationale: The correct answer is A: Red blood cell. Red blood cells, also known as erythrocytes, contain hemoglobin that binds to oxygen and carbon dioxide for transport in the bloodstream. They are specifically designed for gas exchange. White blood cells (B) are part of the immune system and fight infections. Platelets (C) are responsible for blood clotting. Hematocrit (D) refers to the proportion of red blood cells in the blood, not a specific type of cell responsible for gas transport.

Copyright © 2025 Nokea. All rights reserved.