pulsatile flow
Rhythmic, intermittent propagation of a fluid through a vessel or piping system, in contrast to constant, smooth propagation, which produces laminar flow. The quality of blood flow, whether smooth (laminar) or pulsatile, is important to the integrity of the tissues being artificially perfused by various heart assist devices or in regional perfusion.
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
