When sodium channels are fully open, the membrane of the ventricular cardiac muscle cells ________.
A. plateaus
B. has no response
C. sharply hyperpolarizes
D. sharply depolarizes
E. sharply repolarizes
Answer: D
You might also like to view...
Which is immediately lateral to the thalamus?
A. Globus pallidus B. Putamen C. Caudate nucleus D. Claustrum
Which of the following actions does not need to occur at the temporomandibular joint when you are chewing a bite of a sandwich?
A. Lateral excursion B. Abduction C. Elevation D. Depression E. Medial excursion
the "hamstring muscles" get their name from the "ham," more accurately known as the popliteal fossa. based on where the hamstrings are located, what is the popliteal fossa?
a) the pit at the back of the knee b) the socket of the hip joint c) the space underneath the patella d) the fleshy mass at the base of the thumb
Which best describes temporal summation?
A. It only refers to addition of EPSPs. B. A synapse is stimulated a second time before the effect of a first stimulus at the synapse has terminated. C. The size of an EPSP depends on the size of the stimulus. D. It always brings a postsynaptic cell to threshold. E. Two synapses on different regions of a cell are stimulated at the same time.