Which of the Following Is a FALSE Statement About Sympathetic

question 141

Multiple Choice

Which of the following is a FALSE statement about sympathetic activity to the SA node?

• A) Norepinephrine binds to beta₁ adrenergic receptors.
• B) The rate of spontaneous depolarization is increased.
• C) Funny channel opening is enhanced.
• D) Potassium channel closing is enhanced.
• E) cAMP levels in the pacemaker cells increases.

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