The cere of this bird is very brightly colored.

The hymen is a part of the female reproductive system and can break under certain circumstances.

He injured his aponeurosis.

During pregnancy, the decidua plays a crucial role in protecting the fetus.

The allantois plays an important role in the development of the fetus.

The membrane potential of nerve cells is a fundamental mechanism of information transmission.

The membrane surrounding a bird's egg plays an important role in protecting the egg.

He contracted meningitis.

I go to the gym every day to build my muscles.

This river is three long.