The function of the ventricular conduction system of the heart is to
a. spread of the action potential throughout the large ventricular mass to ensure a single, coordinated contraction of the ventricles.
b. spread the action potential in the absence of sympathetic stimulation.
c. set the heart rate.
d. spread the action potential throughout the atria and ventricles.
e. slow down the original action potential so it has time to spread throughout the large ventricular mass.
A
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Which of the following is NOT true of a myofibril?
A. Thin myofilaments consist of actin, troponin, and tropomyosin. B. Thick myofilaments consist of myosin. C. Elastic filaments are composed of titin. D. Myofibrils are composed of muscle fibers. E. All of these are true of myofibrils.
Apoptosis is best described as
A. the process of an aging cell becoming cancerous. B. a process where cells destroy themselves. C. the process of immune cells recognizing an infected cell as "foreign." D. the destruction of a cell through mechanical damage.
Neurons move material away from the neurosoma by retrograde transport.
Answer the following statement true (T) or false (F)