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Virtual Fetal Pig Dissection | Whitman College Welcome to the Whitman College Biology Department's Virtual Pig Dissection (VPD)! This site is designed as a supplement to laboratory dissections exploring introductory mammalian anatomy and physiology — it is basic and many details have been omitted for clarity. Circulatory & Respiratory Systems - CrashCourse Biology #27 Hank takes us on a trip around the body - we follow the circulatory and respiratory systems as they deliver oxygen and remove carbon dioxide from cells, and ... Calcium channel blockers - Drug cabinet | BHF The two classes both help to relax and widen arteries but non-dihydropyridines have an additional effect on the heart’s conduction system and can help to control certain fast heart rhythms (such as atrial fibrillation). This is because non-dihydropyridines also block calcium going into the conducting cells in the heart, which has the effect ... Label circulatory system