The type of membrane that covers the heart is called a
Select one:
a. mucous membrane.
b. serous membrane.
c. basement membrane.
d. pleural membrane.
e. plasma membrane.
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Question 9
Which type of cell will produce antibodies that are released into the bloodstream?
Select one:
a. B cell
b. T cell
c. plasma cell
d. memory cell
e. mast cell
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