Which specialized immune cells mature in the thymus gland and orchestrate cell-mediated immune responses against intracellular pathogens?
Answer and explanation
Correct answer: C. T lymphocytes
- Step 1: Trace lymphocyte differentiation pathways.
- Step 2: T lymphocytes originate from hematopoietic bone marrow stem cells and migrate to the thymus for maturation and selection, functioning as helper (CD4⁺) and cytotoxic (CD8⁺) effectors in cell-mediated immunity.
Answer
T lymphocytes.
Why not the others: B lymphocytes mature in bone marrow and mediate humoral immunity; natural killer cells are innate cytotoxic lymphocytes; neutrophils are myeloid phagocytes.
Practise more Organisms, Evolution and Ecosystems.
Free questions with an explanation for every one, and full timed EmSAT Achieve (UAE) mock tests.
More Organisms, Evolution and Ecosystems questions
- In humans, hemophilia A is an X-linked recessive disorder. A carrier woman (XᴴXʰ) and an unaffected man (XᴴY) have children. What is the pro…
- In a population in Hardy-Weinberg equilibrium, the frequency of a recessive allele (q) is 0.20. What percentage of the population is expecte…
- Which part of the human nephron is primarily responsible for establishing a high hypertonic osmotic gradient in the renal medulla via a coun…
- According to Lindeman's efficiency rule in ecosystem ecology, approximately what fraction of energy is transferred from one trophic level to…
- What type of natural selection favors individuals with intermediate phenotypes while acting against extreme phenotypic variants at both ends…
- Which chamber of the human heart pumps oxygen-rich blood into the systemic aorta under high systolic pressure?