Engines that do not have a water cooling system can not use a heater core; one alternative is to guide air around the (very hot) engine exhaust manifold and then into the vehicle's interior. Temperature control is achieved by mixing with unheated outside air.
OBJECTIVE: The thickness of the prevertebral soft tissue (PVST) is instrumental in helping detect cervical spine injuries in the pediatric population.ormal pediatric prevertebral soft-tissue thickness on MDCT. Vermess D(1), Rojas CA, Shaheen F, Roy P, Martinez CR. Author information: (1)Department of Radiology, University of South Florida College of Medicine, 12901 Bruce B. Downs Blvd, Box 17, Tampa, FL 33612, USA.
Precapillary muscles are rings of smooth muscles at the start of true capillaries that handle blood flow into true capillaries and control blood flow through a body part or area. Physiology The capillary wall is a one-layer tissue so thin that gas and other items such as oxygen, water, proteins and fats can pass through them driven by pressure differences.