A Calcium Channel Blocker Has Been Prescribed for a Client

question 14

Multiple Choice

A calcium channel blocker has been prescribed for a client with hypertension.The nurse explains that this drug affects the function of the L-type calcium channel by:

• A)Blocking sympathetic input to the cell membrane.
• B)Enhancing the action potential along the cell membrane.
• C)Competing for calcium receptors on the L-type calcium channel.
• D)Changing the shape of the L-type calcium channel.