试题与答案

下图是屈肘、伸肘状态图: (1)图中①是肌,②是肌 (2)当手臂处于A状态时,

题型:实验题

题目:

下图是屈肘、伸肘状态图:

(1)图中①是        肌,②是         肌    

(2)当手臂处于A状态时,以           为主的屈肌肌群处于收缩状态。以           为主的伸肌肌群处于舒张状态。

(3)图B中,①和②的状态分别是                      

(4)当手臂自然下垂时,①处于          状态,②处于          状态;

(5)提重物时,①处于          状态,②处于          状态;

答案:

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BC

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