1.Why are vertebrate animal tissues difficult to classify into a single consistent system?

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1.Why are vertebrate animal tissues difficult to classify into a single consistent system?

2007-02-11 14:25:04 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Zoology

1 answers

Tissues are parts of many different systems.

For example: muscle tissue is in
1. digestive system in walls of stomach, ...
2. nervous system in eyeballs
3. circulatory system in heart and arteries
4. muscular system, of course
5. ........

2007-02-11 14:28:21 · answer #1 · answered by ecolink 7 · 0⤊ 0⤋