39. Lymphatic capillaries are distinct from blood capillaries primarily because they:

39. Lymphatic capillaries are distinct from blood capillaries primarily because they:

22. Which physiological mechanism aids in venous return by counteracting low pressure within the veins and ensuring the efficient transport of blood back to the heart?

In the respiratory system, surfactant is produced by which type of cells?

11. Which cardiac chamber is responsible for receiving oxygenated blood returning from the pulmonary circulation via the pulmonary veins?

What is the main function of aldosterone?

Which of the following describes the Hering-Breuer reflex?

Which process allows the immune system to distinguish between self and non-self antigens?

30. Venous return to the heart is facilitated by multiple physiological mechanisms. Which of the following does NOT contribute to assisting venous return?

47. The white pulp of the spleen plays a critical role in which of the following immunological functions?