Biomed Quiz 1

A name given to a variety of devices that convert physiological signals to electrical form.

• sensor

• transducer

• thermometer

• electrode

Which signal is obtained in the limbs

• electromyogram

• electrocardiogram

• electroencephalogram

• phonocardiogram

Which are possible sources of bioelectric signals?

• heart

• brain

• lungs

• stomach

What specific cell of the human body generates bioelectric signals

• blood cells

• nerve cells

• stem cells

• bone cells

The flow of blood in the heart and the flow of air through the upper and ower airways generate what type of signal?

• bioelectric

• bioacoustic

• biomechanical

• biochemical

Which is not a typical source of biomagnetic signal?

• heart

• lungs

• brain

• liver

A/An (a)   is a device that converts ionic potential into bioelectric potential.

The electrical signals generated by nerve impulses to and from the brain are in the order of

• nanovolts

• microvolts

• millivolts

• volts

Which is not a principal ion involved with the phenomena of producing cell potentials

• sodium

• calcium

• potassium

• chloride

The bioelectric currents in the human body is due to the movement of

(a)