Final answer:
The nurse should position the infant on their right side after feeding to help with digestion and reduce the risk of aspiration. Colostrum is important for boosting the newborn's immune system. The heart is the earliest organ to form and begin function within the developing human.
Step-by-step explanation:
After feeding, the nurse should position the infant on their right side. This practice is often recommended because it can help facilitate digestion and reduce the risk of aspiration in case the infant spits up. The position helps in the easier passage of the stomach contents into the intestines because of the stomach's natural curvature and the position of the gastrointestinal organs. Additionally, placing the infant on their right side keeps the airway elevated above the esophagus, which may reduce the risk of milk and stomach acid flowing back into the airway and causing choking or aspiration pneumonia.
Regarding the importance of colostrum to a newborn, the correct answer is that it helps boost the newborn's immune system. Colostrum is the first form of milk produced by the mammary glands of mammals immediately following delivery of the newborn. It is rich in antibodies and provides a significant immunological boost to the newborn who has not yet developed a fully operative immune system.
The earliest organ to form and begin functioning within the developing human is the heart. Development of the heart starts in the embryonic stage and is critical for ensuring that the growing embryo receives a proper supply of nutrients and oxygen through the developing circulatory system.