This is an approximation. Artereolar Smooth muscle has a resting level of contraction called myogenic tone. This resting level can be changed by local and extrinsic signals. Response to injury Extrinsic Controls Sympathetic Nitric Oxide Hormones Fig. 14-41 regulation of arterioles in skeletal muscle Fig.
Lower pressure favors net absorption, higher pressure favors net filtration.
Lower in pulmonary circulation Fig. Total blood volume 2. Respiratory pump 4. Skeletal muscle pump Fig. This controls activity of autonomic innervation of the cardiovascular system 4.