Binding of epinephrine to β1 adrenergic receptors in the heart causes
A) production of second messengers that activate protein kinase A and phosphorylation of myosin heads
B) inhibition of Ca2+ ATPase in the sarcoplasmic reticulum and decreased Ca2+ uptake
C) opening of voltage gated Na+ channels and depolarization
D) no effect, heart does not have functional β1 receptors
Correct Answer:
Verified
Q63: Athletes experience the decrease of the resting
Q64: The first heart sound (lubb) is associated
Q65: Approximately how many cardiac cycles does the
Q66: What is true about right and left
Q67: Select the appropriate relationship between the valves
Q69: What type of receptor is involved in
Q70: When the heart rhythm speeds up or
Q71: To maintain cardiac output adequate to the
Q72: The strength of cardiac muscle contraction for
Q73: How does atherosclerosis increase afterload?
A) because it
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents