Answer:
When calcium concentration increases during depolarization, it shifts the conformation of troponin and tropomyosin, and actin is able to associate with myosin. As calcium is taken up again by the sarcoplasmic reticulum the muscle cell relaxes.
D is probably right cos you are comparing data
<span>Based on the diagnosis, the nurse
anticipates that there will be a component of the treatment plan is supportive.
More severely ill children may be hospitalized and given oxygen, chest
physiotherapy, and IV fluids. Antibiotics are not given. Bacterial pneumonia,
however, is treated with antibiotic therapy.</span>
