The heart is a muscular organ responsible for pumping blood throughout the body, vital for survival. When people refer to the "heart" in a figurative sense, they often allude to one's emotions, desires, or innermost feelings. The mind, in contrast, is associated with the brain, encompassing...
The cardiac muscle is the heart, responsible for pumping blood throughout the body. It is made up of cardiac muscle and is the only place in the body where such muscle is found. All the other muscles in the body are composed of either skeletal muscle or smooth muscle. The most muscular...
The left ventricle is larger than the right ventricle, as it is responsible for pumping blood throughout the body, while the right ventricle pumps blood only into the lungs, where is is oxygenated. The path of blood through the heart begins with deoxygenated blood from the body entering the ...
The conduction system, also called the cardiac electrical system, helps the heart contract, thus pumping blood through the body. It is made up of several different parts, including a sinoatrial (sinus) node. The sinus node is a small collection of tissue. It can be found in the heart's u...
The ejection fraction for heart failure and to determine the heart's pumping efficiency is usually measured using the left ventricle, since this is section responsible for the heart's main pumping action. Every time the heart beats, blood is pumped out of the ventricles. Using this method ...
Aerobic activities such as running, cycling, swimming, and even sex, are effective ways of boosting neurogenesis. The aim is getting the heart pumping for more than 20 minutes at a time, and on a regular basis. In this state levels of several growth hormones are elevated in the brain. ...
What is cardiac arrest? Cardiac arrest typically happens when an electrical malfunction in the heart causes the heart to stop effectively pumping. As a result, the heart no longer delivers blood to the brain and other organs, says Dr. Keever. Without normal blood flow to the brain and vital...
88.【答案】needn’t have borrowed it from the bank【解析】本题考查虚拟语气的用法,needn’t have done的结构是“本不必这样做而做了”的意思。89.【答案】It is because she is so inexperienced【解析】没有经验可以用一个形容词来___,即inexperienced。90.【答案】will be doing/condu...
The Cardiovascular System:The cardiovascular system is composed of the heart, arteries, veins, and smaller blood vessels including the capillaries. This system is responsible for pumping blood around the body and delivering vital nutrients and oxygen to cells....
The splenic vein, also referred to as the lineal vein, is a blood vessel which carries blood from the spleen to the heart. The spleen is an organ of the lymphatic system of the body, which is responsible for maintaining fluid balance. The spleen, located under the ribs on the left side...