systemic circulation

(noun)

The part of blood circulation that carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.

Related Terms

Examples of systemic circulation in the following topics:

  • Systemic and Pulmonary Circulation

    • The cardiovascular system has two distinct circulatory paths, pulmonary circulation and systemic circulation.
    • The cardiovascular system is composed of two circulatory paths: pulmonary circulation, the circuit through the lungs where blood is oxygenated; and systemic circulation, the circuit through the rest of the body to provide oxygenated blood .
    • Oxygen-depleted blood from the body leaves the systemic circulation when it enters the right atrium through the superior and inferior venae cavae.
    • From the right atrium, the blood will travel through the pulmonary circulation to be oxygenated before returning gain to the system circulation.
    • Coronary circulation, blood supply to the heart muscle itself, is also part of the systemic circulation.

  • Blood Supply to the Lungs

    • Systemic circulation refers to blood supply to the rest of the body, for the purpose of supplying oxygen to the tissues.
    • Bronchial circulation (by the bronchial arteries) supplies blood to the tissues of the bronchi and the pleura, and is considered part of systemic circulation.
    • At the end of systemic circulation, the veins take blood back to the heart through the vena cava.
    • Systemic circulation and pulmonary circulation form the overall cycle of the circulatory system: transporting oxygen throughout the body.
    • While the cycle of pulmonary and systemic circulation is a well designed and effective system, it is not immune to certain problems.

  • Blood Flow in the Heart

    • The heart is a key organ in the circulatory system responsible for the generation of pressure and thus flow throughout the system and pulmonary circulatory systems.
    • The heart has its own circulation system, coronary circulation, which is part of systemic circulation.
    • Circulation of blood through the chambers of the heart.
    • Deoxygenated blood is received from the systemic circulation into the right atrium, it is pumped into the right ventricle and then through the pulmonary artery into the lungs.
    • The coronary circulation supplies the heart muscle with the oxygen and nutrients it requires to function.

  • Great Vessels of the Heart

    • The human circulatory system is a double system, meaning there are two separate systems of blood flow: pulmonary circulation and systemic circulation.
    • The adult human heart consists of two separated pumps, the right side (right atrium and ventricle,) which pumps deoxygenated blood into the pulmonary circulation, and the left side (left atrium and ventricle), which pumps oxygenated blood into the systemic circulation.
    • The venae cavae, along with the aorta, are the great vessels involved in systemic circulation.
    • The aorta is the largest of the arteries in systemic circulation.
    • The venae cavae and the aorta form the systemic circuit, which circulates blood to the head, extremities and abdomen.

  • Introduction to Blood Flow, Pressure, and Resistance

    • The circulatory system is the continuous system of tubes that pumps blood to tissues and organs throughout the body.
    • The pulmonary circulatory system circulates deoxygenated blood from the heart to the lungs via the pulmonary artery and returns it to the heart via the pulmonary vein.
    • The systemic circulatory system circulates oxygenated blood from the heart around the body into the tissues before returning deoxygenated blood to the heart.
    • The resistance offered by peripheral circulation is known as systemic vascular resistance (SVR), while the resistance offered by the vasculature of the lungs is known as pulmonary vascular resistance (PVR).
    • Pulmonary circulation is the half of the cardiovascular system that carries oxygen-depleted blood away from the heart to the lungs and returns oxygenated blood back to the heart.

  • Blood Flow in the Lungs

    • Pulmonary circulation in the lungs is responsible for removing carbon dioxide from and replacing oxygen in deoxygenated blood.
    • The pulmonary circulatory system is the portion of the cardiovascular system in which oxygen-depleted blood is pumped away from the heart to the lungs via the pulmonary artery.
    • This blood is pumped through the bicuspid valve into the left ventricle, then distributed to the body through the systemic circulation before returning to the right atrium.
    • Outline the path of pulmonary circulation: blood flow in the lungs

  • Hepatic Portal Circulation

    • The hepatic portal system is responsible for directing blood from parts of the gastrointestinal tract to the liver.
    • The hepatic portal system is the system of veins comprising the hepatic portal vein and its tributaries.
    • It functions to supply the liver with metabolites and ensures that ingested substances are processed in the liver before reaching the systemic circulation, limiting the damage ingested toxins may cause.

  • Fetal Circulation

    • The fetal circulation includes the blood vessels within the placenta and the umbilical cord that carry fetal blood.
    • The fetal circulation is the circulatory system of a human fetus, often encompassing the entire fetoplacental circulation that also includes the umbilical cord and the blood vessels within the placenta that carry fetal blood .
    • The fetal circulation works differently from that of born humans, mainly because the lungs are not in use.
    • The core concept behind fetal circulation is that fetal hemoglobin has a higher affinity for oxygen than adult hemoglobin, which allows a diffusion of oxygen from the mother's circulatory system to the fetus.
    • The circulatory system of the mother is not directly connected to that of the fetus, so the placenta functions as the respiratory center for the fetus as well as a site of filtration for plasma nutrients and wastes.

  • Types of Adaptive Immunity

    • There are two subdivisions of the adaptive immune system: cell-mediated immunity and humoral immunity.
    • T cells then circulate through the body to destroy pathogens in several ways.
    • The B cells then rapidly produce a large number of antibodies that circulate through the body's plasma.
    • Six different classes of antibodies provide distinct functions and interact with different cells in the immune system.
    • Mast cells and eosinophils are considered part of the humoral immune system because they can be sensitized towards certain antigens through circulating immunoglobin E (IgE), a specific type of antibody produced by B cells.

  • Blood Flow in the Brain

    • Cerebral circulation is the movement of blood through the network of blood vessels supplying the brain, providing oxygen and nutrients.
    • Cerebral circulation refers to the movement of blood through the network of blood vessels supplying the brain.
    • Since the brain is very vulnerable to compromises in its blood supply, the cerebral circulatory system has many safeguards.
    • The amount of blood that the cerebral circulation carries is known as cerebral blood flow (CBF).