The organ system that delivers oxygen to body cells and transports carbon dioxide away from them is the respiratory system.
Answer the following statement true (T) or false (F)
False
The cardiovascular system delivers oxygen to cells. The respiratory system delivers oxygen to the blood.
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Bilirubin enters the liver, having originated in the small intestine.
Answer the following statement true (T) or false (F)
The giant protein titin maintains the organization of the ________ assisting in muscle stretching.
A) A band B) I band C) Z disc D) M line
Regarding muscle fiber elongation,
A) many active mechanisms exist for muscle fiber elongation. B) muscle contraction is passive; whereas, elongation is active. C) opposing muscle movements are not a factor. D) gravity may help lengthen a muscle fiber after elongation. E) elastic forces are generated where a muscle fiber elongates.
Under normal conditions, the total solute concentration of the plasma and the interstitial fluid is approximately 300 mOsm.
a. true b. false