Cardiac afterload, or the resistance the ventricle has to overcome in order to pump out blood, is one part of the process that influences how blood flows through the heart. Specifically, the resistance comes from the blood vessels and the contraction of the blood vessel walls.
Keukenhof is located in South Holland in the small town of Lisse, south of Haarlem and southwest of Amsterdam. It is accessible by bus from the train stations of Haarlem, Leiden and Schiphol.It is located in an area called the Dune and Bulb Region (Duin-en Bollenstreek).istory [edit]. Keukenhof is situated on 15th-century hunting grounds. It was also a source of herbs for Jacqueline, Countess of Hainaut 's castle, which is the source of the name Keukenhof (it served to provide herbs for the castle's kitchen). Rich merchants took over the grounds after the Countess's death.
Well, not of the flowers anyway. Keukenhof is the world's largest flower garden, over 70 acres (around 32 hectares) of parkland filled with more than 7 million bulbs - tulips, daffodils, hyacinths, narcissi, gladioli. But mainly it's the tulips - of course, since this is the Netherlands.