Question

Describe pulmonary and systemic circulation.

Answer 1

Hint:Pulmonary and systemic circulation are both parts of the circulatory system or the cardiovascular system. The difference is that the pulmonary system involves heart and lungs while the systemic circulation involves lungs and all other body systems.

Complete answer:
The cardiovascular system is an organ system present in animals. It permits circulation of blood which carries out transport of nutrients, gases, hormones, and blood cells to and from the cells in the body. Its function is to provide nourishment to the cells in the body and helps in fighting diseases, it also stabilizes temperature and pH, by maintaining homeostasis. The lymphatic system is a major part of the circulatory system which circulates lymph. The passage of lymph is much longer than that of blood. The cardiovascular system includes the blood, heart, and blood vessels. On an average, an adult human contains roughly 4.7 to 5.7 litres of blood, which forms approximately around 7% of their total body weight. Plasma, red blood cells, white blood cells, and platelets are components of the blood.

The blood circulatory system has two components, a pulmonary circulation which forms a loop between the lungs where blood is oxygenated and heart and a systemic circulation which forms a loop initiating from heart, moving through the rest of the body to provide oxygenated blood. The systemic circulation can also be divided into two parts, a macrocirculation and a microcirculation.

S. no	Pulmonary circulation	Systemic circulation
1	Carry deoxygenated blood from heart to the lungs.	Carry oxygenated blood from the heart to the rest of the body.
2	Carry oxygenated blood towards the heart.	Carry deoxygenated blood towards the heart.
3	Vessels involved are pulmonary artery and pulmonary vein.	Vessels involved are inferior and superior vena cava, aorta, and numerous small blood vessels.

Note:Systemic circulation and pulmonary circulation may sound different but are a part of the same system. Do not get confused by their names.The blood circulatory system has two components, a pulmonary circulation which forms a loop between the lungs where blood is oxygenated and heart and a systemic circulation which forms a loop initiating from heart, moving through the rest of the body to provide oxygenated blood.