Are these sentences about nutrition true or false? ¿Estas afirmaciones relacionadas con la nutrición son verdaderas o falsas?

1. Raquel Pascual Antón
3º ESO

2. Blood is blue in your body and
turns red outside your body.

4. Blood is red although the
shade of red can vary due
to oxygen concentration.

5. Small intestine is larger
than large intestine.

7. Small intestine: 6-7 m long.
Large intestine: 1,5 m long.
But...

8. ... the small intestine is narrower
than the large intestine!
So the names come from the diameter.

9. Faeces are products of the
excretory system.

11. Faeces are products of the
digestive system.

12. Lungs are not the same
size.

14. To accommodate the heart,
the left lung is smaller than
the right lung.