Compare thin type I pneumocytes with surfactant-secreting type II cells and explain their complementary roles.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2022–2025.
Type I and type II epithelial cells perform different roles in an alveolus. Which combination of structural adaptations supports these roles? A. Type I: a thick keratin layer; type II: no secretory organelles B. Type I: many motile cilia; type II: elongated…
Outline the role of pulmonary surfactant.
(a) Outline anaerobic cell respiration. (b) Describe conditions that allow efficient gas exchange in human lungs.
Which set correctly matches three cells found at a lung air sac with their functions? A. Type I: antibody secretion; type II: oxygen transport in blood; phagocyte: surfactant secretion B. Type I: surfactant secretion; type II: engulfing pathogens; phagocyte:…
Which pairing of alveolar cell type and role is correct? A. Type I: main thin gas-exchange surface; type II: surfactant secretion B. Type I: oxygen manufacture; type II: haemoglobin synthesis C. Type I: antibody storage; type II: pumping blood D. Type I:…
An alveolar cell contains abundant organelles associated with secretion. Which identification is most consistent with this observation? A. An erythrocyte B. A type I pneumocyte with no secretory activity C. A type II pneumocyte producing surfactant D. A neuron…
Which combination correctly matches structures around a mammalian alveolus to their roles? A. Type I cell: surfactant secretion; type II cell: main thin diffusion surface; capillary: carries inhaled air B. Type I cell: gas diffusion; type II cell: surfactant…
Zapisujemy na Twoim urządzeniu to, bez czego serwis nie działa, np. zalogowanie. Plików analitycznych użyjemy tylko za Twoją zgodą. Szczegóły w polityce prywatności.