Packaging Details - Unit Type:piece
- Package Weight:1.0kg (2.20lb.)
- Package Size:20cm x 20cm x 20cm (7.87in x 7.87in x 7.87in)
Packaging Details - Unit Type:piece
- Package Weight:1.0kg (2.20lb.)
- Package Size:20cm x 20cm x 20cm (7.87in x 7.87in x 7.87in)
tyle="max-width:650px;overflow:hidden;font-size:0;clear:both"> /piece /piece /piece /piece /piece /piece /piece /piece Product model: EXG004 Product size: 20*15*6cm Package size: 20*20*20cm Packing weight: 1.0kg Arteriovenous structure model This model represents a muscle strength artery in a small arm and two adjacent veins, and around the adipose tissue and muscle, magnified 14 times. It explains the anatomical relationship between arteries and veins, and the basic functional skills of venous membrane valves ("valve action" and "muscle pump"). The left and middle arteries were incised in the anterior part for transverse, longitudinal and overall identification of the wall tissues at different levels. The anterior portion of the right vein is completely opened, showing venous entry into the blood port and two venous membrane valves, which are composed of a pair of intimal valves. The dorsal surface of the model is a convex two veins to demonstrate the function of the venous valve. Put on the base frame. I.Artery .II vein Endothelium (endothelial cells or vascular endothelium) is a thin layer of specialized epithelial cells composed of a flat cell. It forms the inner wall of blood vessels, and is the interface between blood vessels and other vascular walls (single layer squamous epithelium) in blood vessels. Endothelial cells are along the entire circulatory system, from the heart to the smallest microvasculature. The entire vascular network has a half area of endothelium in the lungs. Subendothelial layer Internal elastic membrane Tunica media External elastic membrane 6.Tunica adventitia II Vein Venous valve Lumen Payment 1.AliExpress supports Visa,Boleto,MasterCard,Maestro Debit Card,Western Union,Webmoney,QIWI and wire Transfer via banks. 2.If you still have any questions on the payment, Feel free to contact us. Shipping 1.We will send the items within 2-3 days once system confirms buyers payment. 2.The shipping cost does not include any import taxes,the buyers are responsible for customs duties. 3.We will refund buyers if buyers return the items within 15 days of buyers receipt of the items for any reason. However,the buyers should bear the return shipping freight and make sure that the items returned are in their original conditions. 4.Items are shipped by AliExpress Standard Shipping , AliExpress Premium Shipping , ePacket,reach most of countries within 15 to 35 bussiness days. Delivery time depends on destination and other factors,it may take up to 60 business days. 5.If you want to get the item faster,please contact us to pay additional freight, we can offer you the following faster and cheaper shipping ways:UPS,DHL,Fedex,TNT,DEPX,EMS.Via these ways, you can get the item within about 5-7 business days. Feedback 1.Your satisfaction and positive feedback is very important to us.Please leave positive feedback and 5 stars if you are satisfied with our items and services. 2.If you have any problems with our items or services,please feel free to contact us first before you leave negative feedback.We will do our best to solve any problems and provide you with the best customer services. -->
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