Sustained contraction and tension in a skeletal muscle is called tetanus. True F
ID: 174035 • Letter: S
Question
Sustained contraction and tension in a skeletal muscle is called tetanus. True False The pacemaker of the heart is normally what structure? sinoatrial node atrioventricular node mitral valve bundle of His left ventricle The frequency of action potentials generated by the SA node is: increased by parasympathetic stimulation. decreased by sympathetic stimulation. increased by acetylcholine. increased by epinephrine. increased by an increase in blood pressure. Norepinephrine and vasopressin are used therapeutically to decrease glomerular filtration rates. decrease blood pressure. Increase blood pressure. Stabilize respiration rates.Explanation / Answer
11. True
The summation of fiber twitches can occur so rapidly that the muscle produces a smooth, sustained contraction known as tetanus.
12. Sinoatrial node
Natural pacemaker of the heart is a node- Sinoatrial node
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.