Fill in the blanks:Atrium and ventricle of the same side are connected

1.	Fill in the blanks:Atrium and ventricle of the same side are connected by atrium _______aperture.The human heart starts beating around the 21st day during ______development.One contraction and one relaxation of atria and ventricles are called one _____cycle
Answer» Atrium and ventricle of the same side are connected by atrium ventricular aperture. The human heart starts beating around the 21st day during embryonic development. One contraction and one relaxation of atria and ventricles are called one cardiac cycle.

Fill in the blanks:Atrium and ventricle of the same side are connected by atrium _aperture.The human heart starts beating around the 21st day during development.One contraction and one relaxation of atria and ventricles are called one _cycle

Answer»

Atrium and ventricle of the same side are connected by atrium ventricular aperture.

The human heart starts beating around the 21st day during embryonic development.

One contraction and one relaxation of atria and ventricles are called one cardiac cycle.