Why Can't Tetanus Occur in the Heart

question 87

Multiple Choice

Why can't tetanus occur in the heart?

• A)There are no distinct motor units in the heart.
• B)There is inadequate oxygen supply via the coronary circulation to metabolically support a sustained contraction.
• C)The refractory period in cardiac muscle lasts almost as long as the contraction.
• D)The heart contracts with maximal force every beat so it is impossible to increase the strength of its contraction.
• E)Vagal stimulation slows down the heart rate to prevent summation of contractions.

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Definitions:

Reduced-Fat Cookies

Cookies that have been formulated to contain lower amounts of fat compared to traditional recipes, often as a healthier option.

Confidence Interval

An inventory of values, coming from sample statististics, predicted to envelop the value of a nebulous population parameter.

Calculus Final

The final examination or assessment in a calculus course, testing students' understanding and proficiency in the subject.

Confidence Interval

An arsenal of values, based on sample's statistical analysis, suggested to likely encompass the value of a cryptic population parameter.