systemic circulation

1. the circulatory system in general.
2. (in mammals and birds) the circulatory system excluding the pulmonary circulation.

* * *

      in physiology, the circuit of vessels supplying oxygenated blood to and returning deoxygenated blood from the tissues of the body, as distinguished from the pulmonary circulation. Blood is pumped from the left ventricle of the heart through the aorta and arterial branches to the arterioles and through capillaries, where it reaches an equilibrium with the tissue fluid, and then drains through the venules into the veins and returns, via the venae cavae, to the right atrium of the heart. Pressure in the arterial system, resulting from heart action and distension by the blood, maintains systemic blood flow. The systemic pathway, however, consists of many circuits in parallel, each of which has its own arteriolar resistance that determines blood flow independently of the overall flow and pressure and without necessarily disrupting these. For example, the blood flow through the digestive tract increases after meals, and that through working muscles increases during exercise. See also pulmonary circulation.

* * *


Universalium. 2010.

Look at other dictionaries:

  • Systemic circulation — is the portion of the cardiovascular system which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart. The term is contrasted with pulmonary circulation. [cite book last = Maton first =… …   Wikipedia

  • systemic circulation — n the passage of arterial blood from the left atrium of the heart through the left ventricle, the systemic arteries, and the capillaries to the organs and tissues that receive much of its oxygen in exchange for carbon dioxide and the return of… …   Medical dictionary

  • systemic circulation — noun circulation that supplies blood to all the body except to the lungs • Hypernyms: ↑circulation * * * noun : the passage of arterial blood from the left auricle of the heart through the left ventricle, the systemic arteries, and the… …   Useful english dictionary

  • systemic circulation — noun The part of blood circulation which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart …   Wiktionary

  • systemic circulation — the system of blood vessels that supplies all parts of the body except the lungs. It consists of the aorta and all its branches, carrying oxygenated blood to the tissues, and all the veins draining deoxygenated blood into the vena cava. Compare:… …   The new mediacal dictionary

  • Круг Кровообращения Большой (Systemic Circulation) — совокупность кровеносных сосудов, которые снабжают кровью все части тела, за исключением сосудов (малого круга кровообращения) легких, в которых осуществляется газообмен. Большой круг кровообращения образован аортой и ее ветвями, по которым… …   Медицинские термины

  • Systemic — Sys*tem ic, a. 1. Of or relating to a system; common to a system; as, the systemic circulation of the blood. [1913 Webster] 2. (Anat. & Physiol.) Of or pertaining to the general system, or the body as a whole; as, systemic death, in distinction… …   The Collaborative International Dictionary of English

  • Systemic death — Systemic Sys*tem ic, a. 1. Of or relating to a system; common to a system; as, the systemic circulation of the blood. [1913 Webster] 2. (Anat. & Physiol.) Of or pertaining to the general system, or the body as a whole; as, systemic death, in… …   The Collaborative International Dictionary of English

  • Systemic — may refer to:*Any body system in general, usually the nervous system. *An insecticide or fungicide whose mode of action is via uptake into a plant, entering the pest when the plant is consumed. *Systemic herbicides are translocated throughout… …   Wikipedia

  • systemic heart — n the part of the heart propelling blood through the systemic circulation specif the left atrium and ventricle of higher vertebrates * * * left h …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.