Environmental influences

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36 Questions - Developed by: V - Developed on: - 2.057 taken

  • 1
    - in standing person gravity induces lower values of blood pressure in the arteries of legs than there are in the head arteries
  • 2
    - an air embolism can occur due to negative „suction“ pressure (lower than the atmospheric pressure) within the big veins of the head in person keeping the upright or sitting positions
  • 3
    - a positive longitudinal overloading can cause „the white blindness“ due to a drain of blood from the retinal (choroid) vessels
  • 4
    - a negative longitudinal overloading can not induce any problems because the brain is
    well supplied by blood
  • 5
    - the human body withstands a longitudinal overloading better than the transverse (chest to back) one
  • 6
    - no gravity (weightlessness state) induces decalcification of bones, reduction of muscle
    matter, and dehydration
  • 7
    - at high altitude (above 3,000 m) a low partial pressure of oxygen in the air results in
    symptoms of hypoxia
  • 8
    - hypoxia is a main reason for symptoms of the “mountain“ disease
  • 9
    - symptoms of both the acute and chronic hypoxia are the same
  • 10
    - symptoms of a chronic hypoxia are lung oedema, brain oedema, collapse, and unconsciousness
  • 11
    - during an acclimatization to hypoxia a release of the erythropoetin from the kidneys induces a rise of red blood cells count
  • 12
    - a „caisson“ disease (decompression disease) results from a rapid release of gas bubbles (particularly nitrogen), which were dissolved in body under the high pressure
  • 13
    - a hyperbaric chamber can be used in a treatment of the “caisson“ disease
  • 14
    - a hyperbaric chamber can be used in treatment of carbon monoxide poisoning
  • 15
    - an ultraviolet light with wavelengths under 280 nm induces mainly erythema
  • 16
    - an ultraviolet light with wavelengths 280-315 nm induces mainly destruction of biomolecules
  • 17
    - an ultraviolet light with a wavelength above 315 nm (UV-A) induces mainly a pigmentation
  • 18
    - an oxygen in the atmosphere completely absorbs the ultraviolet light
  • 19
    - proteins can intensively absorb an ultraviolet light
  • 20
    - nucleic acids only weakly absorb an ultraviolet light
  • 21
    - an ultraviolet light does not penetrate into the water at all
  • 22
    - an ultraviolet light damages mostly the retina of an eye
  • 23
    - a skin phototype means that the skin responds specifically and typically to the exposure of an ultraviolet light by erythema
  • 24
    - a malignant melanoma is a cancer growing mostly due to the overexposure of infrared light
  • 25
    - even a high intensity of radio-waving emission can not damage the body
  • 26
    - even a high intensity of an infrared emission can not cause the health troubles
  • 27
    - an amount of absorbed light (absorbed energy) in the substance depends on the light wavelength
  • 28
    - an amount of absorbed light (absorbed energy) in the substance depends on the type of absorption material
  • 29
    - an amount of absorbed light (absorbed energy) in the substance depends on the amount (intensity) of falling (incoming) light
  • 30
    - an amount of absorbed light (absorbed energy) in the substance depends on the duration of exposure
  • 31
    - an amount of light (intensity of light) passing the medium decreases exponentially with the thickness of the medium
  • 32
    - a concentration of dissolved substances is measured by spectrophotometer at minimum absorption
  • 33
    - during the measurement of substance concentration by spectrophotometer the intensity of transmitting light increases with an increase of the substance concentration
  • 34
    -(2015) Overloading more than 5g is not dangerous already
  • 35
    -(2015) during acclimatization to chronic (prolonged) hypoxia a release of Erytopoetin from Kidney induces higher production of blood cells
  • 36
    True

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