After the brain, Heart is the 2nd most complex and important internal organ of the body. Its function is to pump the blood from all other parts of the body via blood vessels. It is a muscular organ. The action of pumping oxygenated blood into the body is carried out by rhythmic and repeated concentrations. The human heart beats for about 72 times in one minute, on average and it weighs 300-350 gm in males and 250-300 gm in females.
Gallbladder is one of the smaller organ in human body, which is also called cholecyst. It stores the bile that is produced in the liver and aids in digestion process. There is a concave portion in the liver called gallbladder fossa, gallbladder locates here.
The Intestines are extended from the stomach to anus and they are the part of alimentary canal. Intestines are divided into two one is large intestine and the other is called small intestines. Small intestines are further divided into jejunum, duodenum and ileum and the other one is consist of colon and cecum.
Liver is utter necessity for the survival because it is one of the most important and vital organ among all the internal organs of human body. It performs many important functions like protein synthesis, generation of biochemical for digestion process, and cleansing of blood.