Which of the following is NOT an effect of sympathetic stimulation of the heart?
A. an increase in heart rate
B. a decrease in the duration of systole
C. a decrease in the slope of the pacemaker potential
D. an increase in the amount of Ca2+ entering cardiac muscle cells
E. an increase in the rate of cross-bridge cycling in ventricular muscle cells
C
You might also like to view...
What is the importance of body condition scoring in the physical examination?
What will be an ideal response?
A 67-year-old woman with a long history of liver cirrhosis was seen in the emergency department. In this patient with portal hypertension, which of the following veins is most likely to be dilated?
(A) Right colic vein (B) Inferior epigastric vein (C) Inferior phrenic vein (D) Suprarenal vein (E) Ovarian vein
Discuss why an acidic pH is necessary for the stomach's activities to be accomplished
What will be an ideal response?
Which does not empty into the confluence of sinuses?
A. sigmoid sinus B. straight sinus C. occipital sinus D. superior sagittal sinus