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

Correct Answer: Have intercalated discs where there are desmosomes and gap (communicatinjunctions, Are modified to form the nodes and conducting tissue of the heart

Bissoy MCQ
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Related Questions

Cell junctions make up an intercalated disc of cardiac muscle are
A Fascia adherens
B Desmosomes
C Gap junction
D Occluding junction
E Hemidesmosomes
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
Coronary vasodilators released during cardiac muscle ischemia are:
A Adenosine
B Potassium ion
C Hydrogen ion
D Sodium ion
E Bicarbonate ion
Energy source of cardiac muscle in the fasting state are
A Fatty acid
B Glucose
C Amino acid
D Glycerol
E Ketone bodies
Dacron (or terylene) fibres as compared to nylon fibres have
A Better heat & acid resistant properties
B Poorer resistance to alkalis
C Poorer dyeability
D All of the above
Dacron (or terylene) fibres as compared to nylon's fibres have
A Better heat & acid resistant properties
B Poorer resistance to alkalis
C Poorer dyeability
D All of the above
Nerve fibres that supply skeletal muscle are axons of neurons located in
A Ventral gray column of the spinal cord
B Somatic efferent nuclei of cranial nerves
C Dorsal nerve root ganglia
D Branchial efferent nuclei of cranial nerve
E Intermediolateral gray column of the spinal cord
Detrusor muscle is a muscle of
A Urogenital diaphragm
B Urinary bladder
C Scrotum
D Spermatic cord

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