the heart.
There are a few organs in the human body that could be considered creative organs. The brain is one example.
Unless removed for medical reasons - humans are usually born with... one brain two lungs one heart two kidneys one gall bladder one liver one pancreas one bladder one large intestine one small intestine... Making twelve organs in total.
The human body can survive without the spleen, gallbladder, and one kidney.
The spleen is one, and the largest organ in the human body, the skin.
Most organs in the human body serve a particular purpose, and many organs have more than one purpose. Some organs, like wisdom teeth and erector pili are essentially useless and are called vestigial. Other organs like the gall bladder or tonsils are useful, but not essential. Your question is a vague but just about every organ in the human body is essential for life.
It one of a pair organs in the human body they helps with filtration mostly.
The skin is one, it is the largest organ of the human body.
The human heart provides a continuous blood circulation through the cardiac cycle and is one of the most vital organs in the human body.
In a hermaphrodite human body, both male and female reproductive organs may develop. However, the functionality of these organs can vary, as they may not both be fully functional for reproduction. It is possible for a hermaphrodite to have one functional set of reproductive organs, both, or neither.
It is singular. A collection is a grouping of many things as a whole (one). The human body is a collection of organs and various other things, but a "human body" is only one body. The plural of collection is collections.
spleen
The biggest organ in the human body is skin. The skin is also one of five organs that the body can't live without. The liver is the largest internal organ in the human body.