The fibrous sac that encloses the heart is the ________.
A. myocardium
B. epicardium
C. ectocardium
D. pericardium
E. endocardium
Answer: D
Biology & Microbiology
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Indicate whether the statement is true or false
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Indicate whether the statement is true or false
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Fertilization produces
A. eggs. B. zygotes. C. haploid cells. D. gametes.
Biology & Microbiology
The part labeled "C" in the accompanying figure is ____.
A. a nucleus B. chromatin C. the nuclear membrane D. a vacuole E. a mitochondrion
Biology & Microbiology