| circulatory system |
The heart and blood vessels (arteries, veins and capillaries).
출처: www.tulsacpr.com/Media/glossary.html
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| circulatory system |
What are the functions of the circulatory system? What are the major components of the circulatory system? What are the different components of blood? What are their functions and how are they formed?
출처: webpages.marshall.edu/~hurlburt/250terms2.html
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| circulatory system |
None. Since most are microscopic, oxygen enters cells through diffusion.
출처: www.renaissoft.com/april/cgi-bin/wiki.pl
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