Biology, 26.11.2019 00:31 khenalilovespandas

Which of the following statements about blood vessels is correct?
select one:
a. all blood vessels contain an inner smooth muscle layer.
b. all blood vessels contain a tunica externa.
c. all blood vessels contain a tunica intima.
d. all blood vessels contain an inner connective tissue layer.

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Which of the following statements about blood vessels is correct?
select one:
a. all...