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I need to provide proof that these statements are FALSE. But I don't always understand why they...

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Medical Sciences

Ineed to provide proof that these statements are FALSE. But I don'talways understand why they are false.

1.
\"drugs that block L-type Ca channels, reduce thecontraction-efficiency of cardiac muscle, but not of skeletalmuscles.\"

(dont the skeletal muscles just need the tiniest bit of Ca touse the DHP channels?)

2.
\"the length of a skeletal muscle twitch is about 10-100ms\"

(is this maybe for all muscle types? and not just for skeletalmuscles?)

thx in advance!

Answer & Explanation Solved by verified expert
4.2 Ratings (760 Votes)
Ltype calcium channels are responsible for the excitationcontraction coupling of skeletal smooth cardiac muscle and for aldosterone secretion in endocrine cells of the adrenal cortexThey are also found in neurons and with the help of Ltype calcium channels in endocrine cells they regulate neurohormones and    See Answer
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