Which instrument is used to supplement oxygen supply? respiratory therapy is used when the respiratory system fails to perform adequately. a nasal is a flexible tube that is inserted into the nose to provide oxygen in case of respiratory distress.

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?