Article Text

PDF

Principles of vascular control
  1. Eric Neil

    Abstract

    The distribution of nutrient materials to, and the uptake of waste products from, the tissues occurs only in the capillary bed. Arteriolar resistance ensures that blood enters the capillaries at a pressure only slightly higher than that of the colloid osmotic pressure of the blood. Arteriolar resistance is normally under the influence of a sparse sympathetic vasoconstrictor discharge superintended by the activity of ‘vasomotor centres’ in the brain stem. The activity of these ‘vasomotor centres’ is itself modified appropriately by afferent impulses from the sino-aortic baroreceptors.

    Veins subserve mainly a capacity role but are also involved in veno-constrictor reflexes.

    Statistics from Altmetric.com

    Request permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.