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Author Question: Which of the following structures help direct blood flow forward and prevent the backflow of blood ... (Read 59 times)

ashley

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on: Jul 2, 2018
Which of the following structures help direct blood flow forward and prevent the backflow of blood within the heart?
 
  a. Septa
  b. The coronary arteries
  c. The atrioventricular valves
  d. The pulmonary vein and the pulmonary artery

Question 2

The walls of the capillaries are only one cell thick. This allows the exchange of nutrients and oxygen and waste products. The capillaries serve as the bridge between:
 
  a. arterioles and venules.
  b. the atrium right and the left atrium.
  c. the pulmonary vein and the pulmonary artery.
  d. arteries and veins.


Smiles0805

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Reply #1 on: Jul 2, 2018
Answer to Question 1

Answer: c

Answer to Question 2

Answer: a


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