QUESTION 1 The Let-go current is normally larger than the current needed to indu

Question

QUESTION 1

The Let-go current is normally larger than the current needed to induce a sustained myocardial contraction such as is done when using a defibrillator.

True

False

QUESTION 2

The Let-go current is:

The maximum current that a subject can experience and still voluntarily withdraw their hand to prevent additional damage.

The minimum current an individual can detect.

The minimum current before which there is an involuntary contraction of respiratory tissue

The minimum current that wil produce rapid and disorganized ventricular contractions

Question 3

The Let-go current is frequency dependent.

Ture

False

QUESTION 4

Only current through the heart produces fibrillation of the heart.

True

False

QUESTION 5

Our best protection against electrical shock is:

A.The relatively high resistance of our skin

B.The relatively high resistance or our blood

C.A diet low in iron

D.Proton ray shielding

QUESTION 6

You must touch a high-voltage source to be harmed from it.

True

False

The maximum current that a subject can experience and still voluntarily withdraw their hand to prevent additional damage.

The minimum current an individual can detect.

The minimum current before which there is an involuntary contraction of respiratory tissue

The minimum current that wil produce rapid and disorganized ventricular contractions

Explanation / Answer

1- TRUE yes let go current is generally in milli amperes. But the current in sustained mycrocardial contraction in in microamperes.

2- its answer is A. As let go current is threshhold current after whuch our muscles will loose control.

3- TRUE. yes it is frequency deoendant . It increase at low and high frequencies.

4- FALSE. the current speads over the whole body.

4-

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