Question

Pulmonary and Systemic Circulations

Using no more than 14 propositions, trace the pathway of blood through the pulmonary and systemic circuits, and state the importance and functions of these circuits.

Pulmonary and Systemic Circulations Using no more than 14 propositions, trace the pathway of blood through the pulmonary and systemic circuits, and state the importance and functions of these circuits. How do create a concept map? l How am graded? I Switch to keyboard version aorta and thoracic aorta send(s) oxygen-poor blood directly to the left side of the heart send(s) oxygen-rich blood directly to the pulmonary capillaries pulmonary trunk and pulmonary arteries pulmonary veins right side of the heart superior and inferior venae cavae systemic arteries and capillaries of the body systemic veins

Answer 1

The cardiovascular system is divided into 2 circuits

Pulmonary circuit- is the movement of the blood from the heart (deoxygenated blood) to the lungs, and back to the heart again (oxygenated blood). The pulmonary circuit is important for gas exchange.

Deoxygeneted blood moves from the vena cava to the right atrium -> The blood now moves from right AV into the right ventricle -> pulmonary semilunar valve into pulmonary trunk and lungs -> Here blood is oxygenated and CO2 is given up within pulmonary capillaries -> oxygenated blood travels through the pulmonary veins into the left atrium -> Finally blood pumps through the left AV valve into the left ventricle.

Systemic circuit- is the circulation of blood to all the parts of the body except the lungs. The systemic circuit carries oxygen and nutrients to the cells and picks up carbon dioxide and waste products.

Oxgenated blood moves to the left ventricle of the heart -> Through aorta the blood gets pumped to all parts of the body except lungs -> During this movement, O2 and nutrients diffuse into the cells while CO2 and wastes diffuse out -> At last blood flows through inferior/superior vena cava to the right atrium of the heart.

Vessels that carry the blood through the circuits are arteries which carry blood away from the heart, veins that carry blood to the heart and capillaries that permit exchange.