What is systemic circulation?
Responses
the path of blood as it moves from the head throughout the body and back to the head
the path of blood as it moves from the head throughout the body and back to the head - no response given
the path of blood between pharynx and trachea
the path of blood between pharynx and trachea - incorrect
the path of blood as it moves from the heart throughout the body and back to the heart
the path of blood as it moves from the heart throughout the body and back to the heart - not selected, this is the correct answer
the path of blood between the heart and lungs Explain
Systemic circulation refers to the path that blood takes as it is pumped from the heart, travels throughout the body to supply oxygen and nutrients to tissues, and then returns to the heart. It involves the blood vessels of the arteries, veins, and capillaries that supply the various organs and tissues of the body. This circulation is responsible for delivering oxygenated blood to the body's cells and removing waste products for elimination.
Systemic circulation refers to the path that blood takes as it moves from the heart throughout the body and back to the heart again. It is responsible for delivering oxygenated blood to the tissues and organs of the body, while also removing carbon dioxide and waste products. The process begins when oxygenated blood is pumped out of the left ventricle of the heart into the aorta. From there, the blood is distributed through a network of arteries, arterioles, and capillaries, reaching all body tissues. In the capillaries, oxygen and nutrients are exchanged with the surrounding cells, and carbon dioxide and waste products are picked up. The deoxygenated blood then returns to the heart through a system of venules and veins, eventually entering the right atrium. Finally, the blood is pumped into the right ventricle and then sent to the lungs for oxygenation through pulmonary circulation.
Systemic circulation refers to the path of blood as it moves from the heart throughout the body and back to the heart. This process helps deliver oxygen-rich blood to various organs and tissues while removing waste products like carbon dioxide.
To understand systemic circulation, it is important to know the anatomy of the circulatory system. The heart, a muscular organ, is responsible for pumping blood. It consists of four chambers - two atria and two ventricles. The right side of the heart receives deoxygenated blood from the body, and the left side receives oxygenated blood from the lungs.
The journey of blood in systemic circulation starts when oxygenated blood leaves the left ventricle of the heart through the largest artery, called the aorta. The aorta branches into smaller arteries, which further divide into arterioles, and eventually into capillaries. Capillaries are tiny, thin-walled blood vessels that allow for exchange of oxygen, nutrients, and waste products with cells in various organs and tissues.
After the exchange at the capillary level, the blood becomes deoxygenated and collects waste products. The deoxygenated blood then enters small venules, which merge to form larger veins. The veins carry the deoxygenated blood back towards the heart, specifically into the right atrium.
From the right atrium, the deoxygenated blood moves into the right ventricle, and then it is pumped to the lungs for oxygenation through the pulmonary circulation. After obtaining oxygen in the lungs, the blood returns to the heart's left atrium, which marks the start of systemic circulation again.
In summary, systemic circulation involves the continuous circulation of blood from the heart to organs and tissues throughout the body, supplying oxygen and nutrients while removing waste products. It is a vital process for maintaining the body's overall function.