Health Risks & Environmental Impact Flashcards
7 cards from real CMA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Health Risks & Environmental Impact flashcards as text
Which mold species is most commonly associated with producing trichothecene mycotoxins linked to severe immune suppression?
Answer: Stachybotrys chartarum
Stachybotrys chartarum (black mold) is the primary producer of trichothecene mycotoxins, which can significantly suppress immune function.
A child living in a mold-contaminated home develops recurrent sinusitis and fatigue. Which immune response mechanism is most directly triggered by chronic mold spore inhalation?
Answer: Type I IgE-mediated hypersensitivity
Mold spores most commonly trigger Type I IgE-mediated hypersensitivity, leading to allergic rhinitis, sinusitis, and asthma.
Which environmental condition most significantly increases the rate of mycotoxin production by indoor molds?
Answer: High humidity above 70% RH combined with organic substrate
High relative humidity (above 70%) combined with organic substrates such as wood or drywall dramatically accelerates mycotoxin synthesis.
Aflatoxin B1, produced by Aspergillus flavus, is classified as a Group 1 carcinogen by the IARC. Which organ is the primary target for aflatoxin-induced cancer?
Answer: Liver
Aflatoxin B1 is a potent hepatocarcinogen, primarily causing hepatocellular carcinoma after chronic exposure.
Which population group faces the GREATEST risk of invasive fungal infection when exposed to Aspergillus spores in an indoor environment?
Answer: Immunocompromised individuals such as organ transplant recipients
Immunocompromised individuals, including transplant recipients on immunosuppressants, are at highest risk for invasive aspergillosis.
Hypersensitivity Pneumonitis (HP) differs from mold-triggered asthma primarily because HP involves:
Answer: An inflammatory response in the alveoli driven by immune complex and T-cell reactions
HP is characterized by alveolar inflammation driven by immune complex deposition (Type III) and T-cell-mediated (Type IV) reactions, not simple bronchoconstriction.
A mold assessor documents Chaetomium globosum growing extensively on water-damaged drywall. Which health concern is most specifically associated with this mold?
Answer: Production of chaetoglobosins linked to cytotoxic and neurological effects
Chaetomium globosum produces chaetoglobosins, which are cytotoxic compounds with documented neurological and immunosuppressive effects.