Medical MCQs

5099 MCQs  (Page 464 of 510)

Rigor mortis results after death is due to________________?
A. Failure of acetylcholine to diffuse
B. Failure of atp supply
C. Failure of break down of calcium bridges
D. None of the above
All are features of skeletal muscle except______________?
A. Cylindrical
B. Transverse striation
C. Centrally placed nuclei
D. Multiple nuclei
The end plate potential is characterized by_____________?
A. Propagation
B. All or none law
C. Depolarization
D. Hyper polarization
Test for estimating kidney function is_______________?
A. Serum creatinine
B. Serum phosphatase
C. Inulin test
D. Insulin test
Upstroke of action potential would lead to________________?
A. Net current in an outward direction
B. Cell interior becomes more negative
C. Cell interior becomes less negative
D. None of the above
Small packets of acetylcholine released randomly from the nerve cell membrane at rest Produces_______________?
A. Inhibitory post synaptic potential
B. Miniature end plate potential
C. Action potential
D. End plate potential
Cardiac muscle contracts due to______________?
A. Extracellular ca+2
B. Sarcoplasmic ca+2
C. Extracellular na+
D. Intracellular na+