Compression stockings put firm pressure on the legs, which promotes blood flow toward the heart.[3]Three different levels of compression hose exist. Reinforced pantyhose offer the lowest level of support; you can buy them anywhere you get pantyhose. Compression hose provides a higher level of ...
点评:固定词组,be believed to意思“被认为”,句子 The heart is believed to pump blood into veins(血管) which are netted all over the body, thus keeping a person alive.是个关系代词which引导的定语从句,先行词是veins,从句是which are netted all over the body。
Support hose squeezes veins, forcing blood toward heartDr. Paul DonohuePaul G. Donohue (STANDARD)
Which blood vessel transports blood from the heart to the lungs? (a) Which veins are paired? (b) Which veins are singular? Because veins lack the muscular layer that arteries have, what processes are used to move the blood through the veins and back to the heart?
Unlike arteries, veins generally need to work against gravity to push blood back to your heart. Veins have valves to help with this. These are one-way pairs of flaps inside a vein. They open for blood that’s heading upwards toward the heart, and close to keep blood from flowing back ...
A. Veins. B. Capillaries. C. Arteries. D. Lymphatic vessels. 相关知识点: 试题来源: 解析 C。解析:“Arteries carry oxygen-rich blood away from the heart to different parts of the body.”,动脉将富含氧气的血液从心脏输送到身体的各个部位。反馈 收藏 ...
pump英语... ...The heart pumps blood into the veins.心脏把血液送至血管。 adjustable blade propeller pump 调节叶片螺桨泵 ... dict.netat.net|基于15个网页 2. 心脏把血液压送至血管 www.huixue.cc|基于2个网页 释义: 全部,心脏把血液送至血管,心脏把血液压送至血管 ...
ANIMATION zoom in blood flowing through veins to beating heart - stock video Save SAME SERIES View allPURCHASE A LICENSE Get personalized pricing by telling us when, where, and how you want to use this asset. SELECT OPTIONS ADD TO CART DETAILS Credit: The Cinema Guild Creative #: 7...
Many people have spider veins, which are enlarged capillaries. Capillaries are tiny, extremely thin-walled vessels that act as a bridge between arteries (which carry blood away from the heart) andveins(which carry blood back to the heart). ...
The heart is believed to ___blood into veins(血管) which are netted all over the body, thus keeping a person alive. [ ] A. give B. donate C. circulate D. pump 请仔细审题,看清楚题目要求,认真作答! 正确答案 验证码: 查看正确答案 试题...