Which of the following properties means the muscle tissue returns to its original shape and length?以下哪个属性意味着肌肉组织恢复到原来的形状和长度？
A. Excitability.
B. Contractibility.
C. Extensibility.
D. Elasticity.
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Monocytes are:单核细胞是：
A. phagocytic formed elements that are similar to free macrophages in tissues.
B. white blood cells that are found in glands.
C. formed elements that promote inflammation.
D. responsible for the transportation of gases.
E. responsible for sealing damaged or leaking vessels.
A red blood cell:红细胞：
A. is a fragment of precursor cells.
B. is multinucleated.
C. contains granules in their cytoplasm.
D. lacks a nucleus.
E. can move into tissue spaces from intact blood vessels.
Platelets are responsible for:血小板负责：
A. initiating a blood clot.
B. fighting infection.
C. producing an allergic reaction.
D. transporting carbon dioxide.
E. releasing histamine.
The extracellular matrix (ECM) of blood is referred to as:血液的细胞外基质（ECM）称为：
A. plasma.
B. water.
C. fibrin.
D. platelet.
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