Which of the following does not characterize the circulatory systems of lungfishes?
A) Lungfishes have a heart with a partially divided atrium.
B) Lungfishes have a vessel, not present in other fishes, that transports blood from lungs back to the heart.
C) When breathing air, deoxygenated blood that enters the heart is directed to the anterior pair of gill arches lacking gill filaments.
D) The right side of the atrium receives blood low in oxygen from the tissues.
E) The left side of the atrium receives blood high in oxygen from the lungs.

Question

Quizplus · Accepted Answer

The circulatory systems of lungfishes are unique and adapted for their ability to breathe air. They have a heart with a partially divided atrium, with the left side receiving oxygenated blood from the lungs and the right side receiving deoxygenated blood from the tissues. Lungfishes also have a vessel, called the pulmonary artery, that transports blood from the lungs back to the heart. However, when breathing air, the deoxygenated blood that enters the heart is directed to the posterior pair of gill arches lacking gill filaments, not the anterior pair as stated in option C.

Which of the Following Does Not Characterize the Circulatory Systems