Question

multiple choice question
which is true about pulmonary circuit as compared to the systemic circuit?

blood pressure is higher in the pulmonary circuit
pulmonary arteries have thicker, more elastic walls
pulmonary arteries carry oxygen - poor blood and veins carry oxygen - rich blood
blood flows more quickly through the pulmonary capillaries

Explanation:

• Analyze each option:
• Blood pressure in systemic circuit is higher than pulmonary, so first option is wrong.
• Systemic arteries have thicker, more elastic walls, so second option is wrong.
• In pulmonary circuit, arteries (pulmonary arteries) carry deoxygenated (oxygen - poor) blood to lungs, and veins (pulmonary veins) carry oxygenated (oxygen - rich) blood back to heart, which is correct.
• Blood flows slower in pulmonary capillaries for gas exchange, so fourth option is wrong.

Answer:

C. Pulmonary arteries carry oxygen - poor blood and veins carry oxygen - rich blood (assuming the third option is labeled as C, if the original options have labels like A, B, C, D, adjust the label according to the actual option numbering. Here, the third option in the list is the correct one, so if the options are labeled as A, B, C, D in order, it is C. Pulmonary arteries carry oxygen - poor blood and veins carry oxygen - rich blood)