So quickish question. For my A&P class, we have to design a new organ system for the human body. Are there organ systems that some animals have that we don't? I was thinking venom sacs in humans (but that's an extension of digestive system) or gills (extension of respiratory... do you see my problem here??).
Are you asking for a new system or a new organ, because there are lots of organs in the animal kingdom that we humans just donât have.
A entirely new system is extremely difficult to think of, because evolution does a reasonably good job at producing creatures that live, and all their basic systems are universal. Everything respires, everything eats, everything filters waste, etc. These are pretty basic properties of life.
Systems are made up of organs, but just because we donât have a venom gland doesnât mean that it necessarily doesnât count as ânewâ just because we already have an intestine. Almost everything is basically a modified something-else. Mammary glands are modified sweat glands, for example.
A few organs in the animal kingdom that are very different to those we possess include, but are by no means limited to:
And so on. While we share many similarities across the evolutionary tree, there are lots of variations on anatomy that we just donât have. Remember than an organ is just a bunch or organized tissue that performs a purpose, you have lots of options.
Oh, and sorry if this ask is answered too late, but I really shouldnât be doing your homework for you. :)