Infant respiratory distress syndrome (IRDS) is a condition peculiar to premature babies. In IRDS insufficient surfactant is produced. What does this cause and how is it treated?
What will be an ideal response
Too little surfactant results in increased surface tension that can collapse the alveoli. Great effort is required to completely reinflate the alveoli during each inspiration. IRDS is treated by spraying natural or synthetic surfactant into the newborn's respiratory passageways. Also, devices that maintain positive airway pressure throughout the respiratory cycle can keep the alveoli open between breaths. Severe cases require mechanical ventilators.
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What is the major difference between polar and nonpolar covalent bonds?
What will be an ideal response?
Anterior pituitary hormones
A. are all proteins or glycoproteins. B. are transported in the hypothalamohypophysial portal system. C. bind to intracellular receptor molecules. D. have a half-life of hours. E. are released as a direct result of action potentials.
The portion of the larynx seen on CT axial images encircling the laryngopharynx is the ____________________.
Fill in the blank(s) with the appropriate word(s).
The styloid process of the ________ points to the thumb
Fill in the blanks with correct word