Chapter 4

Question

Which of the following terms is NOT one of the known types of tissue-polarization due to application of an external electric current?

Answer 1

a) electronic polarization;

Answer 2

b) electrode polarization;

Answer 3

c) electret polarization.

Answer 4

a) electrode polarization;

Answer 5

b) dipole polarization;

Answer 6

c) macrostructural polarization.

Answer 7

a) electronic;

Answer 8

c) superficial.

Answer 9

a) higher frequency → higher number of polarizations;

Answer 10

b) lower frequency → higher number of polarizations;

Answer 11

c) lower frequency → lower number of polarizations.

Answer 12

a) current increases continuously;

Answer 13

b) current decreases exponentially;

Answer 14

c) current remains constant.

Answer 15

a) generation of polarization potential, opposing the external voltage;

Answer 16

b) increase of the internal resistance of the tissue;

Answer 17

) the leakage of charge out of the tissue.

Answer 18

a) through the cytosol;

Answer 19

b) through the interstitial spaces;

Answer 20

c) through cellular membranes, via nexus junctions between cells.

Answer 21

a) surface polarization;

Answer 22

b) macrostructural polarization;

Answer 23

c) orientational polarization.

Answer 24

a) superficial polarization;

Answer 25

b) macrostructural polarization;

Answer 26

c) electrode polarization.

Answer 27

a) resistive and capacitive;

Answer 28

b) resistive and inductive;

Answer 29

c) capacitive and inductive.

Answer 30

a) resistive, because cellular fluids are rich in electrolytes;

Answer 31

b) capacitive, because cellular fluids have sub-structures;

Answer 32

c) inductive, because there are inductive currents in the fluids.

Answer 33

a) extra- and intra-cellular fluids;

Answer 34

b) cellular and intra-cellular membranes;

Answer 35

c) the free movement of ions.

Answer 36

a) a type of action potential;

Answer 37

b) the location where a neuronal excitation is transferred to a muscle;

Answer 38

c) the structure that opens voltage-gated Ca2+ channels.

Answer 39

a) echography;

Answer 40

b) physical therapy;

Answer 41

c) electrophoresis.

Answer 42

a) there is polarization of dissolved ions;

Answer 43

b) the conductivity of the cell increases due to temperature increase;

Answer 44

c) the current will decrease with time.

Answer 45

a) there will be polarization of the ion channels;

Answer 46

b) the conductivity of the cell increases due heating;

Answer 47

c) the current decreases with time.

Answer 48

a) there is a polarization of the ion channels;

Answer 49

b) there is a heating effect;

Answer 50

c) there is a decrease of the current due to accommodation.

Answer 51

a) the reorientation of mostly water molecules due an external field;

Answer 52

b) the conversion of the double electric layer into directional dipoles;

Answer 53

c) the formation of dipole moment due to the external field.

Answer 54

a) is related mostly to water molecules;

Answer 55

b) involves the formation of a double electric layer;

Answer 56

c) decreases the intercellular communication.

Answer 57

a) involves mostly water molecules;

Answer 58

b) relates to the formation of a double electric layer;

Answer 59

c) increases the electromotive force (EMF) generated in biological tissue.

Answer 60

a) occur predominately in bone tissue;

Answer 61

b) cause heating in soft tissue;

Answer 62

c) decrease the magnitude of currents passing through soft tissue.

Answer 63

a) epilepsy;

Answer 64

b) arrhythmia;

Answer 65

c) muscle atrophy.

Answer 66

a) a muscle twitch;

Answer 67

b) muscle relaxation;

Answer 68

c) complete tetanus.

Answer 69

a) pulsed current above the threshold;

Answer 70

b) direct current with high voltage;

Answer 71

c) direct current with variable voltage.

Answer 72

a) the activation of voltage-gated Ca2+ channels;

Answer 73

b) the increase of the active resistance of the skin;

Answer 74

c) the polarization of the tissue.

Answer 75

a) observation of the spontaneous contractions in smooth muscles of the gastrointestinal tract;

Answer 76

b) conditioning mostly of skeletal muscles;

Answer 77

c) stimulation of the peripheral nerves.

Answer 78

a) a passive property;

Answer 79

b) an active property;

Answer 80

c) biological tissue has only resistance.

Answer 81

a) DC does not flow through cells, only in the extracellular fluid;

Answer 82

b) DC flows through the cells;

Answer 83

c) DC decreases exponentially with time, regarding of the applied constant voltage.

Answer 84

a) sub-threshold stimulation;

Answer 85

b) single action potential;

Answer 86

c) a series of fast local responses.

Answer 87

a) a series of sub-threshold stimuli;

Answer 88

b) a series of over-threshold stimuli;

Answer 89

c) a series of fast local responses.

Answer 90

a) series of fast sequential muscle contractions;

Answer 91

b) series of muscle contractions, where new contractions begin before the ending of previous contractions;

Answer 92

c) group of sequential muscle contractions, triggered by singlesub-threshold stimulation.

Answer 93

a) the interval between action potentials is shorter than the duration of the muscle contraction;

Answer 94

b) the interval between action potentials is longer than the duration of the muscle contraction;

Answer 95

c) when the duration of the action potential is longer then the duration of the muscle contraction.

Answer 96

a) a muscle contraction resulting from depolarization;

Answer 97

b) a muscle contraction triggered by a high voltage;

Answer 98

c) a muscle relaxation following the polarization of muscle cells.

Answer 99

b) muscle tissue;

Answer 100

c) fat tissue.

Answer 101

a) depolarization;

Answer 102

b) polarization;

Answer 103

c) induction.

Answer 104

a) low frequency pulsed current;

Answer 105

b) high frequency pulsed current;

Answer 106

c) sine-wave current.

	Creado por Y Y hace más de 5 años

Siguiente

Chapter 4

Descripción

Resumen del Recurso

Pregunta 1

Pregunta 2

Pregunta 3

Pregunta 4

Pregunta 5

Pregunta 6

Pregunta 7

Pregunta 8

Pregunta 9

Pregunta 10

Pregunta 11

Pregunta 12

Pregunta 13

Pregunta 14

Pregunta 15

Pregunta 16

Pregunta 17

Pregunta 18

Pregunta 19

Pregunta 20

Pregunta 21

Pregunta 22

Pregunta 23

Pregunta 24

Pregunta 25

Pregunta 26

Pregunta 27

Pregunta 28

Pregunta 29

Pregunta 30

Pregunta 31

Pregunta 32

Pregunta 33

Pregunta 34

Pregunta 35

Pregunta 36

Pregunta 37

Similar