Answer to Question 1
A
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Oral decongestants are drugs that are taken by mouth to decrease nasal congestion related to the common cold, sinusitis, and allergic rhinitis. They are also used to relieve the pain and congestion of otitis media. Opening of the nasal passage allows better drainage of the Eustachian tube, relieving pressure in the middle ear. It should be given prior to a feeding so that infant is able to suck more effectively.
Answer to Question 2
A
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Calcium is released from the sarcoplasmic reticulum, which leads to the binding of calcium with troponintropomyosin . This leads to contraction of the muscle fiber. The calcium pump then moves calcium back into the sarcoplasmic reticulum, which leads to relaxation of muscle fiber. Chloride, magnesium, and hydrogen are not involved in this process.