(Q).
Q: What are the smallest type of blood vessel? Read this paragraph and choose the correct option from the provided answers: Further away from the heart, the aorta branches into smaller arteries, which eventually branch into capillaries. Capillaries are the smallest type of blood vessel; they connect very small arteries and veins. Gases and other substances are exchanged between cells and the blood across the very thin walls of capillaries. Choices: - varicose veins - spider veins - arteries - capillaries A:
(A).
capillaries

(Q).
Q: In gas exchange, oxygen flows into the blood, and what flows out? Read this paragraph and choose the correct option from the provided answers: Gas exchange is the movement of oxygen into the blood and carbon dioxide out of the blood. Choices: - naturally dioxide - carbon monoxide - liquid dioxide - carbon dioxide A:
(A).
carbon dioxide

(Q).
Q: Each lymph organ has a different job in what system? Read this paragraph and choose the correct option from the provided answers: Each lymph organ has a different job in the immune system. Choices: - circulatory - respiratory - nervous - immune A:
(A).
immune