Pelvis is a region of the human body.
Tail of the pancreas and part of the stomach
Spleen and stomach
They are counted as only one organ.
yes
The small intestines are in this region.
Vasdefrines, there are around thirty feet of these springlike tubes in each normal male.
bladder
Yes. It is the intestinal region, therefore it is an organ.
Appendix
No. The collection of organs is organ system.
Pelvis is a region of the human body.
Cerebrum
There is no such thing as an "organ of muscles".
Well apart from the liver and heart you do have two of each organ.
Yes, as each bone is considered an organ made up of different kinds of tissues. Each organ then is part of an organ system.
Spleen and stomach