A child who is experiencing an exacerbation of asthma is brought to the emergency department by his parents. When reviewing the child's laboratory and diagnostic test results, which is consistent with the diagnosis:

A. Hyperinflation of lungs on chest radiograph
B. Increased peak expiratory flow rate
C. Low arterial blood carbon dioxide level
D. Decreased pulmonary function tests

The bones of the extremities are parts of the a-appendicular skeleton b-axial skeleton c-long bone group d-medial skeleton

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

Which of the following can be effective in preventing the onset of viral infection in humans? a) taking vitaminsb) getting vaccinatedc) taking antibioticsd) taking drugs that inhibit transcription