Related Questions

Painless myocardial ischemia may cocur in
A Diabetes mellitus
B Old age
C Tuberculosis
D Immunocompromised state
E Bronchiectasis
Restoration of blood flow to an area of ischemia
A Produce reperfusion injury through free radicals
B May produce tissue damage through IgM mediated complement activation
C Will result in recovery of necrosed cells
D Cause further cell death exclusively by apoptosis
E Prevents further tissue damage by necrosis if re-established within 48 hours
Necrosis in a solid organ due to ischemia
A Is called infarction
B Is dusky red in color
C Is Coagulative in nature
D Is reversed by reperfusion
E Does not produce any inflammation
Clinical features of acute limb ischemia are
A Coldness
B Pain
C Hair loss
D Muscle atrophy
E Intermittent claudication
Cell junctions make up an intercalated disc of cardiac muscle are
A Fascia adherens
B Desmosomes
C Gap junction
D Occluding junction
E Hemidesmosomes
Cardiac muscle fibres
A Have intercalated discs where there are desmosomes and gap (communicatinjunctions
B Are modified to form the nodes and conducting tissue of the heart
C Have a peripheral nucleus
D Have a T-system of tubules between the A and I bands
E Have motor end-plates
Plateau phase in the action potential of cardiac muscle
A Is due to slow Ca+ -Na channel
B Coincides with ventricular systole
C Results in prolonged refractory period
D Is due to efflux of K+
E Is due to fast sodium channel
Plateau (phase2) of the action potential in cardiac muscle
A Coincides with ventricular systole
B Results in prolonged refractory period
C Is due increased calcium ion influx
D Coincides with PR interval of ECG
E Is due to efflux of K+
Plateau in the cardiac muscle
A Is due to opening of slow calcium-sodium channel
B Results in prolonged refractory period
C Coincides with ventricular systole
D Is due to K+ efflux
E Is due to opening of transient calcium channel
Energy source of cardiac muscle in the fasting state are
A Fatty acid
B Glucose
C Amino acid
D Glycerol
E Ketone bodies

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