MID TERM EXAM
Question : What two types of hearing loss are associated with noise?
Student Acoustic trauma and noise induced
Answer:
High frequency and low frequency
High frequency and acoustic trauma
Noise induced and low frequency
Instructor Two types of hearing loss are associated with noise: (1) acoustic trauma or
Explanation: instantaneous damage caused by a single sharply rising wave of sound (e.g.,
gunfire), and (2) noise-induced hearing loss, the more common type, which is the
result of prolonged exposure to intense sound (e.g., noise associated with the
workplace and leisure-time activities). The remaining options are not related to
noise but rather to the amplitude of the sound.
Question 7 Question :
. A hypersensitivity reaction that produces an allergic response is called:
Student Answer: Hemolytic shock
Anaphylaxis
Necrotizing vasculitis
Systemic erythematosus
Instructor Examples of systemic anaphylaxis are allergic reactions to beestings, peanuts,
Explanation: and fish. The other options are not accurate examples of hypersensitivity.
Question 8 Question :
. Which cytokine is produced and released from virally infected host
cells?
, Student IL-1
Answer:
IL-10
Tumor necrosis factor–alpha (TNF-α)
Interferon-alpha (IFN-α)
Instructor Only interferons are produced and released by virally infected cells in response to
Explanation: viral double-stranded ribonucleic acid (RNA). IFN-α and IFN-β induce the
production of antiviral proteins, thereby conferring protection on uninfected cells.
IFN-α or IFN-β is released from virally infected cells and attaches to a receptor on a
neighboring cell. IFNs also enhance the efficiency of developing an acquired
immune response.
Question 10 Question :
. Which T-lymphocyte phenotype is the key determinant of childhood
asthma?
Student CD4 helper T 1 (Th1) lymphocytes
Answer:
CD4 helper T 2 (Th2) lymphocytes
CD8 cytotoxic T (Tc) lymphocytes
Memory T lymphocytes
Instructor Asthma develops because the Th2 response (in which CD4 helper T cells produce
Explanation: specific cytokines, such as IL-4, IL-5, and IL-13) promotes an atopic and allergic
response in the airways. This selection is the only option that accurately identifies
the appropriate T-lymphocyte phenotype.
Question 12 Question :
. Some older adults have impaired inflammation and wound healing
because of which problem?
Student Answer: The circulatory system cannot adequately perfuse tissues.
Question : What two types of hearing loss are associated with noise?
Student Acoustic trauma and noise induced
Answer:
High frequency and low frequency
High frequency and acoustic trauma
Noise induced and low frequency
Instructor Two types of hearing loss are associated with noise: (1) acoustic trauma or
Explanation: instantaneous damage caused by a single sharply rising wave of sound (e.g.,
gunfire), and (2) noise-induced hearing loss, the more common type, which is the
result of prolonged exposure to intense sound (e.g., noise associated with the
workplace and leisure-time activities). The remaining options are not related to
noise but rather to the amplitude of the sound.
Question 7 Question :
. A hypersensitivity reaction that produces an allergic response is called:
Student Answer: Hemolytic shock
Anaphylaxis
Necrotizing vasculitis
Systemic erythematosus
Instructor Examples of systemic anaphylaxis are allergic reactions to beestings, peanuts,
Explanation: and fish. The other options are not accurate examples of hypersensitivity.
Question 8 Question :
. Which cytokine is produced and released from virally infected host
cells?
, Student IL-1
Answer:
IL-10
Tumor necrosis factor–alpha (TNF-α)
Interferon-alpha (IFN-α)
Instructor Only interferons are produced and released by virally infected cells in response to
Explanation: viral double-stranded ribonucleic acid (RNA). IFN-α and IFN-β induce the
production of antiviral proteins, thereby conferring protection on uninfected cells.
IFN-α or IFN-β is released from virally infected cells and attaches to a receptor on a
neighboring cell. IFNs also enhance the efficiency of developing an acquired
immune response.
Question 10 Question :
. Which T-lymphocyte phenotype is the key determinant of childhood
asthma?
Student CD4 helper T 1 (Th1) lymphocytes
Answer:
CD4 helper T 2 (Th2) lymphocytes
CD8 cytotoxic T (Tc) lymphocytes
Memory T lymphocytes
Instructor Asthma develops because the Th2 response (in which CD4 helper T cells produce
Explanation: specific cytokines, such as IL-4, IL-5, and IL-13) promotes an atopic and allergic
response in the airways. This selection is the only option that accurately identifies
the appropriate T-lymphocyte phenotype.
Question 12 Question :
. Some older adults have impaired inflammation and wound healing
because of which problem?
Student Answer: The circulatory system cannot adequately perfuse tissues.
