Emergency vehicle lighting is one or more visual warning lights fitted to a vehicle for use when the driver wishes to convey to other road users the urgency of their journey, to provide additional warning of a hazard when stationary, or in the case of law enforcement as a means of signalling another driver to stop for interaction with an officer.
Grossular dodecahedron, .7 cm across, from Coahuila, Mexico. Grossular is a calcium-aluminium species of the garnet group of minerals. It has the chemical formula of Ca3Al2(SiO4)3 but the calcium may, in part, be replaced by ferrous iron and the aluminium by ferric iron.
arteriole. afferent glomerular arteriole a branch of an interlobular artery that goes to a renal glomerulus. efferent glomerular arteriole one arising from a renal glomerulus, breaking up into capillaries to supply renal tubules.postglomerular arteriole efferent glomerular a.precapillary arteriole arterial capillary. preglomerular arteriole afferent glomerular a. straight arterioles of kidney branches of the arcuate arteries of the kidney arising from the efferent glomerular arterioles and passing down to the renal pyramids.fferent glomerular arteriole a branch of an interlobular artery that goes to a renal glomerulus. efferent glomerular arteriole one arising from a renal glomerulus, breaking up into capillaries to supply renal tubules. postglomerular arteriole efferent glomerular a. precapillary arteriole arterial capillary.