Question

What are the hollow organs of the body? Is the kidney hollow?

Answer 1

Hint: They are the organs of the digestive system along with few organs of the reproductive system and the excretory system. These organs are lined by the epithelial cells as it lines the organs that cave cavities or are hollow.

Complete answer:
The hollow organs are those organs that have a small or narrow cavity or lumen inside them. These organs include the esophagus, stomach, small intestine, gallbladder, fallopian tubes, and urinary bladder. The kidney is not a hollow organ.
-Esophagus also called the alimentary canal is a long tube through which the food is taken into the body and gets digested. It is a long canal that starts from the mouth and ends at the anus.
-The stomach is teh muscular organ that is found in the abdominal region. It helps in the secretion of various enzymes for the process of food digestion. It is hollow in structure as it consists of a large body cavity.
-The organ below the stomach in the small intestine helps in the process of digestion and absorption. This absorption occurs through the villi which are the small finger-like projections present in them and increase their surface area. The small intestine is hollow from the side and on the lining villi is present.
-The gall bladder helps in the process of digestion as it stores the bile and releases the bile juices. It is located on the right of the body below the rib cage. It has a small cavity inside thus making it a hollow organ.
-The part of the female reproductive system is called the fallopian tubes whose main function is to join the ovaries and the uterus. It is the place where the process of fertilization takes place. They are hollow organs due to the presence of narrow lumen inside them.
-Urinary bladder is a muscular organ that is hollow and helps in the storage of urine. In this region, the urine is stored after it is entered through the kidney via ureters.

Note:
The organs that are not hollow and instead of having a narrow lumen or small cavities inside them are completely filled from inside and are called the solid organs. These solid organs include the kidneys, pancreas, ovaries, and testis, liver, etc.