Which type of T cell is responsible for enhancing the activity of other immune cells during the immune response?
Cytotoxic T cells
Memory T cells
Helper T cells
Suppressor T cells
The Correct Answer is C
Explanation: Helper T cells (CD4+ T cells) play a critical role in the immune response by enhancing the activity of other immune cells. They secrete cytokines that stimulate B cells to produce antibodies, activate cytotoxic T cells to kill infected cells, and promote the function of macrophages in phagocytosis. Helper T cells are essential for coordinating and regulating the immune response.
Incorrect choices:
a. Cytotoxic T cells (CD8+ T cells) are responsible for directly attacking and killing infected cells, not enhancing the activity of other immune cells.
b. Memory T cells are formed after the immune system encounters an antigen and are not directly involved in enhancing immune cell activity.
d. Suppressor T cells (regulatory T cells) are involved in down-regulating the immune response to prevent excessive inflammation and tissue damage, not in enhancing immune cell activity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Explanation: The human papillomavirus (HPV) vaccine is recommended for adolescents to protect against certain types of HPV infections, which can lead to cervical, vaginal, vulvar, penile, anal, and throat cancers.
Incorrect choices:
a. The hepatitis B vaccine is typically given in infancy and does not protect against certain types of cancer.
b. The influenza vaccine is recommended annually for people of all ages to prevent the flu, not certain types of cancer.
d. The meningococcal vaccine protects against meningococcal infections, not certain types of cancer.
Conclusion xx
Correct Answer is C
Explanation
Explanation: The pneumococcal polysaccharide vaccine is recommended for older adults to protect against pneumonia caused by Streptococcus pneumoniae bacteria. The influenza vaccine is recommended annually for people of all ages to prevent the flu.
Incorrect choices:
a. The hepatitis B vaccine is not specifically recommended for older adults to prevent pneumonia.
b. The influenza vaccine protects against the flu, not pneumonia.
d. The HPV vaccine is recommended for adolescents and young adults, not older adults, and does not protect against pneumonia.
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