HEART

The heart is the most important part of the body. It is the center of life. However, the heart is only as big as a closed hand. ( General Classification)

The heart is a muscle and it beats about seventy times per minute throughthout a person’s life. (Description)

The heart pumps blood from your heart to all parts of your body. The heart is made up of four chambers or small “rooms”. The top chamber are called the right and left auriclesand the botttom chambers are the right and left ventricles. (Description)

When blood enters the heart. It is in dark reddish color because it countains carbon dioxide. The blood enters the right auricle and then the right ventricle. When the heart contracts, it forces the blood to the lungs where the blood receives oxygen. It then goes to the left auricle. The heart contracts again, and the blood goes to the left ventricle and is then forced out into the body. The blood gathers carbon dioxide and returns to the heart, and the process begins again. (Description)



By AHMAD RIZAL KHULUMBI
KLS; IX C
NO ABSEN : 03