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F7198

Total Pages: 2

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Max. Marks: 100

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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2017
Course Code: EC365
Course Name: BIOMEDICAL ENGINEERING (EC)

PART A

Answer any two full questions, each carries 15 marks.
Explain with necessary diagram how action potential is generated in human body
and write the nernst equation for resting membrane potential.
The intracellular k* concentration of a group of cells averages 140×107 moles/cm’,
The extracellular concentration of k* averages 4×10“ moles/cm’, Find:
i) Concentration ratio 11) Diffusion potential for 1”
Explain the following:

i) Half cell potential ii) Ag-AgCl electrode.
What are the essential features required for bio-potential amplifiers?

With a neat sketch explain the working of human heart.
Draw a typical ECG signal and mark its amplitude and time.

Explain the principle, lead configuration and recording system of ECG.

With the help of a diagram explain any one direct method for the measurement of
blood pressure.

Explain the basic principle of electromagnetic blood flow meter and
with neat sketch explain Ultrasonic blood flow meter.

PART B
Answer any two full questions, each carries 15 marks.
List the different waves in EEG recording and explain the 10-20 lead system used
to record EEG.

With neat sketch explain any two types of electrodes used in EEG recording

Explain how nerve conduction velocity is calculated? An EMG signal has the
following specifications. Maximum signal amplitude 3mV and bandwidth 20 to
3000 Hz. Draw the block diagram of EMG measurement and explain the need for
each block.

List any four human respiratory parameters and define each in two lines and
explain how spirometer can be used for respiratory volume measurement.

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Duration: 3 Hours

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