These are from a practice exam, I’ve already narrowed down my answers, these are the ones I’m not sure about.
THANKS.

The tissue type repsonsible for protection of the body from the external environment?
-skin, epithelium or integument?

I am thinking epithehelium
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Which best explains why long bones are hollowin themiddle?
– lighten them, Wolff’s law (absence of load)?
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Which about collagen is FALSE?
– formed by macromolecular assembly of procallagen, produced by enzymes, or its slight crimp give it elasticity independent of elastin?
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Which is false?
– primary cell in fibrocaritlage is fibrochondrocyte or , primary celll type in skeletal muscle is myofibre?
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Which tissue best resit tensile pure force?
– tendon, muscle elastic cartilage or fibrocartilage?
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Which does not describe how animal reduce heat loss in cold environment?
– brown adpose tissu, or decrease body temp or countercurrent mechanisms?

THANKS.