When multiple stimuli were applied at 20 stimuli/sec, _______.
A) fused tetanus occurred
B) extrasystoles were produced
C) triplets representing three ventricular contractions occurred
D) atrial contractions completely disappeared
Answer: B) extrasystoles were produced
You might also like to view...
A gluteal gait, in which a person walks with a waddling limp, is usually caused by a
disorder of the A) gluteus maximus and gluteus minimus. B) gluteus maximus and tensor fasciae latae. C) gluteus medius and gluteus minimus. D) gluteus maximus and gluteus medius.
Parasympathetic stimulation and epinephrine enhance the heart's contractility
a. True b. False Indicate whether the statement is true or false
Perilymph is found in the ________
A) auditory tube B) membranous labyrinth C) external acoustic meatus D) bony labyrinth
Which of the following tissues is most dependent upon a constant blood supply of glucose?
A. Cardiac muscle B. Adipose C. Skeletal muscle D. Liver E. Brain