百度试题 结果1 题目What is the circulatory system ? A. The system that helps your body breathe B. Your body’s muscles C. Your body’s nerves D. Your body’s blood transporting system 相关知识点: 试题来源: 解析 D
The circulatory system is responsible for___. A. digestion B. respiration C. transporting substances D. producing E. nergy 相关知识点: 试题来源: 解析 C。循环系统负责运输物质。选项 A 消化是消化系统的功能;选项 B 呼吸是呼吸系统的功能;选项 D 产生能量主要是通过细胞呼吸等过程。本题考查对循环系统...
The circulatory system is composed of ___. A. The heart, blood, and blood vessels B. The heart, the brain, and the lungs C. The lungs, the blood, and the blood vessels D. The brain, the heart, and the blood vessels 相关知识点: 试题...
根据第四段中的“We’ve talked about the blood in your system collecting oxygen and delivering it all around the body. It also does another important job. It takes carbon dioxide from your body back to the lungs to be let out when you breathe out.”可知,血液中携带的是二氧化碳和氧气。故...
The main roles of the blood circulatory system (cardiovascular system) are to deliver nutrients and oxygen to the cells in the body and to have the waste products removed. The heart and the blood vessels (arteries, veins, and capillaries) of the circulat
closed system of pipe closed talking microp closed the door closed under the oper closed vessed closed w closed melbourne closed-circuit cyclon closed-circuit televi closed-circuit tunnel closed-cloorism closed-cycle mhd powe closed-loop system fr closed-loop voltageog closed-topduplexlante closedci...
Without the heart, no blood would get anywhere around your body. The heart is a big pump (泵). It continuously pumps the blood around the circulatory system. This has to happen all the time to keep you alive. There are two loops in the circulatory system; the first goes to and from ...
百度试题 题目The circulatory system is divided into three major parts: ___相关知识点: 试题来源: 解析 heart, blood and blood vessels
Closed Circulatory System: Definition & Advantage from Chapter 30 / Lesson 11 43K The human body uses a closed circulatory system to transport blood and nutrients within a closed circuit of vessels. Learn about the circulatory system, open and closed circulatory systems and the advantages of a...
Since the circulatory system is a closed loop, cardiac output and venous return are equal. 我们稍微简化一下:一段时间内,任一心室泵出的血液量称为心输出量。静脉将血液送回到心房的速度叫做静脉回心血量。这个很容易记,由于循环系统是闭环,心输出和静脉回流是相等的。 Okay, so let's use some numbers...