In the heart, the interatrial and interventricular septaA) ...

[MirandaLo]

In the heart, the interatrial and interventricular septaA) prevent blood exchange between the atria and ventricles.
  B) allow blood to flow in only one direction between the atria and ventricles.
  C) act as the pacemaker of the heart.
  D) are the gatekeepers for the pulmonary and systemic circulatory systems.

Question 2

The systemic circulatory system
 A) begins at the left ventricle.
  B) is responsible for distributing blood to the entire body.
  C) ends at the right atrium.
  D) All of the above

[scrocafella]

Answer to Question 1

A

Answer to Question 2

D

[MirandaLo]

Thanks for the timely response, appreciate it

[debra928]

Excellent