The heart is a muscle in the body that is about the size of a persons clenched fist. There are three types of muscle in the body: cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striated, and are under involuntary control. The heart ha...
American literature That Muscle Called the Heart| Essays about a marriage UNIVERSITY OF NEBRASKA AT OMAHA Lisa Knopp GaskinKatharineis a collection of creative nonfiction essays of varying lengths and writing styles. Shorter, lyrical pieces recreate moments in history, while longer research-based essays...
The heart is an important ___. A. organ B. bone C. muscle D. nerve 相关知识点: 试题来源: 解析 A。“heart”(心脏)是一种重要的“organ”(器官)。“bone”是骨头,“muscle”是肌肉,“nerve”是神经,都不符合心脏的类别。反馈 收藏
The heart is a striated muscle___contract as quickly as the skeletal muscles. A. it does not B. does not C. that does not D. who does not 相关知识点: 试题来源: 解析 C 正确答案:C 解析:That does not introduces an adjective clause that modifies muscle. 知识模块:语法反馈 ...
百度试题 结果1 题目Heart failure occurs when the heart muscle weakens___and can no longer pump effectively. A. over time B. in time C. on time D. for the time being 相关知识点: 试题来源: 解析 A 反馈 收藏
the heart muscle is limited (coronary artery disease), a network of tiny blood vessels in the heart that aren't usually open called collateral vessels may enlarge and become active. This allows blood to flow around the blocked artery to the heart muscle, protecting the heart tissue from ...
百度试题 结果1 题目The heart contains the body's strongest muscle. A. Right B. Wrong C. Notmentioned 相关知识点: 试题来源: 解析 C 整篇文章都没有提到心脏。反馈 收藏
When the heart muscle contracts, the blood is forced out into arteries and enters small capillaries. Blood returns to the heart through veins.心脏是一块被分为几乎对等两半的肌肉。一半吸收来自肺部的血液,并将血液运送到机体的其余部位,另一半使流经全身的血液回流人肺。心脏收缩时,动脉把全身血液输送到...
The muscle below the lungs that assist with breathing is called the ___. a. cardiac b. diaphragm c. pleura d. femoral Accessory Muscles of Respiration: At times, an extra respiratory effort is required, which necessitates the use of additional ...
Like smooth muscle, cardiac muscle also works involuntarily. It is a very thick muscle that is found only in the walls of the heart. Its job is to pump blood out of the heart and into blood vessels called arteries(动脉). The arteries help carry the blood to all parts of...