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 the body. When the cardiac muscles relax, they let ...
根据“Skeletal muscles (骨骼肌) control organs within our body. Cardiac muscle (心肌) is special.”可知,一共提到了两种肌肉。故选A。 (4)题详解: 词句猜测题。has the duty for有责任;turns on打开;puts off推迟;gives up放弃。根据“Just like our eyes, nose and ears, it houses one of our ...
The gluteus maximus is the largest muscle in the body. The gluteus muscles are composed of skeletal muscle tissue. This muscle is probably one that you’re using right now whether you are sitting or standing. The gluteus maximum is located at the rear of the hip. This muscle is the larges...
What is the functional unit of a skeletal muscle called? What is the relationship between the structure and function of the smooth muscle? What is the importance of the muscle system? Which neuron would activate a muscle? Which muscle tissue has no gap junctions?
Like skeletal muscle, cardiac muscle is striated, or formed of bands called sarcomeres that give it a striped appearance under the microscope. It also has multiple nuclei per cell, like skeletal muscle, but unlike smooth muscle. At the same time, cardiac muscle is like smooth muscle in that...
From this lesson you will learn about how proton pump inhibitors are types of medications that treat certain gastrointestinal problems, including...
The ___ molecule is the primary energy source for biological reactions. Which of these tissues would you expect to produce the most energy (ATP)? (a) skeletal muscle (b) smooth muscle (c) adipose tissue (d) areolar tissue. Which type of food molecule provides...
This is necessary for the cells to perform their function efficiently. Smooth muscle tissue, as the name implies, has a uniform appearance, similar to that of non-muscular tissue. The cells do not need to be as elongated as skeletal muscle fibers, because the motion created by these muscles...
the plasma membrane that act as gates, which control what goes into and out of the cell. One of these 'gates' is a pump which pulls K+ into the cell. This creates an uneven distribution, orgradient, of potassium, in which the concentration of K+ is higher inside the cell than out...
@boathugger: It’s called action potential. The contractions of the cardiac muscle are triggered in a different way than the contraction of the skeletal muscle, which is caused by electrical impulses from nerve terminals located at the individual muscle fibers. ...