Exam Biomedical Sensors & Signals 08.09.2018

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Mryoyo15
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Exam Biomedical Sensors & Signals 08.09.2018

Beitrag von Mryoyo15 » 30.09.2019, 12:38

BSS Exam 07.09.2018
8 Participants

Written Part:
Windkessel Effect
Laplace Law
Selectivity for Na+ and K+ ions
Physiological Interpretation of QT Section in EKG

Oral
  • Participant No1:
    Frequency dependance of permeability E (relaxation frequency of water, which dispersion?)
    Why is the ST Interval 0 (exictation) ?
  • Participant No2:
    Why are bilayer sensitive to temperature? + sketch of bilayer temperatures
    Difference primary and secondary sensing cells
  • Participant No3:
    Compartment model of tissue + sketch (Focus on cardiac activity)
    Why Mü proportional to I/I_0?
    Frequency / Chest piece
    Why do action potentials propagate only in one direction?
  • Participant No4:
    What is a omsoceptor?
    What is the relation between PTT & Blood Pressure
  • Participant No5:
    Relation blood pressure and respiration (respiratory pump)
    difference ADelta-fibres and C-fibres
    Difference inner and outer hair cells
  • Participant No6:
    Damping factors, Why 1/r? (unit of r); p = p_0 * e^-alpha*r; e^-alpha*r physical factor = 1; so r = [1/m] same with alpha
    What is Alpha?
    Is Alpha dependant on frequency ?
    Attrenuation of acoustic singals
  • Participant No7:
    Transmitter controlled channels (sketch + why is it occuring? why attraction? because of KLK = charges and the structure)
    Condition of Valves to function/open
    Difference On-Off Cells
  • Participant No8:
    How frequency is converted to Action Impulse in air
    why 500Hz? -> because of refractory time (absolute refractory time and relative refractory time)
    old people lose ability to learn high f and why not low f? why is this?
    P-Wave of ECG
    Referred Pain

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