Chapter·PhysiologyNerve and Muscle Physiology

Neuromuscular JunctionDownloads

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Sample Questions

1

Which of the following is a characteristic feature of myasthenia gravis?

ADecreased levels of myosin in muscle fibers

BAbsence of troponin C in muscle fibers

CIncreased transmission at the myoneural junction

DPresence of antibodies against acetylcholine receptors

2

Acetylcholine release can be increased from presynaptic membrane by:

ABlocking voltage gated K+ channels on presynaptic membrane

BBlocking voltage gated Cl- channels on presynaptic membrane

CBlocking voltage gated Na+ channels on presynaptic membrane

DBlocking voltage gated Ca2+ channels on presynaptic membrane

3

Which receptors are blocked in Myasthenia Gravis?

AACh receptors

BOpioid receptors

CNa+ receptors

DCa++ receptors

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