The diagram shows an external view of the human heart. Which of the following statements about the artery shown on the diagram is/are correct?
1 It is the site of diffusion of glucose and oxygen into the muscle cells of the heart.
2 It transports blood at high pressure.
3 It contains muscle cells.

Answer:

17) G

You will need to identify that the artery is coronary artery. The coronary artery supplies the muscles of the blood with oxygen and nutrients.

1 – Wrong
The coronary artery supplies the muscles of the blood with oxygen and nutrients. HOWEVER, the site of diffusion of glucose and oxygen will be the capillaries and not the artery.

2 – Correct
Arteries carry blood at high pressure.

3 – Correct
Arteries have muscles cells.

G is the answer.