1/ Which of the following characteristics is shared between smooth muscle and skeletal muscle? Select one: _ a. Striated...

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Medical Sciences

1/Which of the following characteristics is shared between smoothmuscle and skeletal muscle?
Select one: _
a. Striated arrangement of the actin and myosin filaments_
b. Presence of T tubule network
c. Ability to contract in the absence of an actionpotential
d. Dependence of contraction on Ca+2 ions

2/ Which of the following conditions causes bleeding tendencyafter prolonged exposure to hazardous irradiation?
Select one: _
a. Vitamin K deficiency _
b. Hemophilia L
c. Chronic liver disease
_ d. Thrombocytopenia

3/ Which of the following enables smooth muscle to contractrhythmically in the absence of external stimuli?
Select one: _
a. Hyperpolarized membrane potential _
b. Ability to pump calcium to the extracellular space
c. Intrinsic pacemaker wave activity
d. Higher resting cytosolic Ca2+ concentration

4/ Which one of the following cells is an antigen presentingcell (APC)?
Select one: _
a. B cell _
b. T cell
C. Basophil
d. Mast cell - e Eosinophil

Answer & Explanation Solved by verified expert

3.5 Ratings (483 Votes)

Option DDependence of contraction on Ca2 ions Both Skeletal muscles and Smooth muscles requires ca2 for their contraction Option AFalseStriated arrangement of the actin and myosin filaments are seen in Skeletal muscle but not in Smooth muscles Option BFalsePresence of T tubule See Answer

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