This card describes arteries and arterioles, including their structure suited for high-pressure blood transport away from the heart and their role in controlling blood flow to organs.
Tato karta popisuje tepny a arterioly, jejich strukturu určenou k přenosu krve pod vysokým tlakem a jejich roli při regulaci průtoku krve do orgánů.
| Front | Arteries and arterioles 3.1.2(c) |
|---|---|
| Back | - carries high pressure oxy blood (apart from in pulmonary artery and umbilical artery) away from heart to tissues, arterial walls contain elastic fibers (to withstand force of blood, recoils between contractions of heart), smooth muscle lining (blood flows easily over it) and collagen - Pulmonary Carries deoxy blood from heart to lungs and umbilical carries deoxy blood from fetus to placenta during pregnancy - Arterioles link arteries and caps (with more smooth muscles and less elastic rhat arteries), dilate/contract to control flow of blood into organs - vasoconstriction (smooth muscle contracts, limiting blood flow) and vasodilation (relaxes, increasing blood flow) |
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