Question

Draw a three-chambered heart circulatory system. indicate where high pO2 blood is and where low pO2 blood. Include the systemic and pulmonary circuits, as well as the ventricles and atria. Indicate direction of blood flow. (4 points)

Answer 1

coaぐ on lu heart arta ena v OA

This is the three chambered heart diagram.These chambers determine how efficiently the heart separates the flow of oxygen-rich blood and oxygen-poor blood throughout the body. Vertebrate hearts can be categorized by the number of chambers they have:

• Two chambers: one atrium and one ventricle (fish)
• Three chambers: two atria and one ventricle (amphibian and reptile)
• Four chambers: two atria and two ventricles (bird and mammal)

Pulmonary and Systemic Circulation------

There are in reality two independent circulatory systems within the body, each with its own pump inside the sheathing of the heart. In one of these systems, called the pulmonary circulation, the right side of the heart pumps blood through the lungs. In the lungs, the blood gives up its carbon dioxide and absorbs a fresh supply of oxygen. The reoxygenated blood then flows to the left side of the heart, and is pumped out again to all the systems and organs of the body. This major circulatory system is called the systemic circulation.

Blood flows from the Right Atrium to the Right Ventricle then to the Left Atrium to the Left Ventricle.there are atrioventricular valves. Between the right atrium and right ventricle there is the tricuspid valve and between the leftatrium and left ventricle there is the bicuspid (mitral) valve.When atria contract the valves open and when the ventricles contract they close.