question_answer

Which of the following is important for muscle contraction and nerve impulse transmission?

A)   ions                          

B)   ions

C)  The Both [a] and [b]     

D)   ions

Correct Answer: A

Solution :

 is essential of muscle contraction, neutro-muscular functions and nerve impulse transmission.    During   nerve    impulse transmission, as an impulse arrives at a synaptic knob, calcium ions  diffuse into the knobs from surrounding tissue fluid.  trigger a process in which numerous synaptic vesicles fuse with the membrane of the knob and the areas of fusion break down; releasing the contents of vesicles into the fluid of synaptic clefts.