NEET PG DENTAL EXAM

Detailed explanation-1: -The capillaries, where the gaseous exchange occurs, merge into venules and these converge to form larger and larger veins until the blood reaches either the superior vena cava or inferior vena cava, which drain into the right atrium.

Detailed explanation-2: -Veins. Veins carry blood toward the heart. After blood passes through the capillaries, it enters the smallest veins, called venules. From the venules, it flows into progressively larger and larger veins until it reaches the heart.

Detailed explanation-3: -The arteries diverge into narrow arterioles, and then further diverge into capillaries. The blood in the capillaries is collected into venules. The venules converge into veins that carry the blood to the heart.

Detailed explanation-4: -Blood leaves the capillary and enters the small venules. These venules become progressively larger vessels called veins. The vena cava are the two largest veins that carry blood into the right upper chamber of the heart (the right atrium).