Which statement about the circulatory system of turtles is false?
A) When under water, pulmonary vessels constrict, pulmonary resistance increases, and blood tends to flow into the right aorta and out to the body.
B) The right aorta contains a mixture of high- and low-oxygen blood.
C) When turtles breathe, resistance in the pulmonary circuit is lower than resistance in the systemic circuit, and blood tends to flow into the pulmonary artery.
D) When turtles are under water, pulmonary vessels constrict, pulmonary resistance increases, and blood tends to flow into the left aorta, rather than the pulmonary artery.
E) When turtles are not breathing, blood flows out of both aortas.

Question

Quizplus · Accepted Answer

When turtles are under water, pulmonary vessels constrict and pulmonary resistance increases, but blood tends to flow into the left aorta, not the right aorta as stated in option A. Option B is true, as the right aorta contains a mixture of high- and low-oxygen blood. Option C is also true, as resistance in the pulmonary circuit is lower than resistance in the systemic circuit during breathing. Option E is true, as blood flows out of both aortas when turtles are not breathing.

Which Statement About the Circulatory System of Turtles Is False