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Select your answer:
A  B  C  D  E 

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Topics:

Endocrine System Anatomical Terminology Phlebotomy CP A&P: Cardiovascular Respiratory Effects of Exercise on the Musculoskeletal System Non-infectious Disease Epithelial Nutrient Cycling Cardiorespiratory System Molecular Basis of Inheritance Asexual/Sexual Reproduction Cancer (Bio II) Disabilities Health

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Other quiz: Human Body

It serves as one of our primary defense against pathogenic organisms and other organisms that can cause various diseases.

A. heart

B. liver

C. muscles

D. integument

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