The Heart and Circulatory System

Cardiac contractions in the heart and circulatory system during the cardiac cycle produce regular heart beats and pulses. These contractions are caused by electrical stimulation called cardiac impulse. The natural pacemaker of this heart called a sinus nodule is in the right atrium. Electrical pulses go out of the sinus node and proceed to the left and right atria, and they shrink together. After contraction, there are periods that are not sensitive to stimulation, and the ventricles can be filled with blood.

5% of deaths from all cancers Heart and circulatory system: Drinking affects these bodily systems and causes heart diseases, stroke, other diseases (thrombus enters the brain, brains prevent brain circulation in the brain When you enter into). Such fetal alcohol syndrome (FAS), fetal alcohol spectrum disorder (FASD). These are postnatal permanent birth defects (NIAAA) for women who consume physical alcohol during pregnancy.

The cardiovascular system, also known as the cardiovascular system, consists of the heart, veins, arteries and capillaries. The circulatory system circulates blood throughout the body and supplies nutrients and oxygen to the cells. Lymphatic system, including lymph nodes and lymph nodes, is also part of the circulatory system, which transports fat, destroys bacteria, and returns protein and interstitial fluid from the blood. The urinary system ejects excrement from the body in the form of urine. Kidney, ureter, bladder, urethra are all part of the urinary system. Organs of the urinary system may be combined with organs that remove waste such as skin, lungs, large intestine and so on, and this is called excretory system.