Correct Answer: C

Rationale: Dendritic cells play a critical role in initiating adaptive immune responses by capturing antigens from pathogens, migrating to lymphoid organs, and presenting these antigens to naïve T cells. This activation of naïve T cells by dendritic cells is essential for the adaptive immune system to generate specific immune responses against pathogens. Dendritic cells act as professional antigen-presenting cells, which are specialized to capture, process, and present antigens to T cells, thereby facilitating the activation of T cells and the coordination of adaptive immune responses, such as the production of specific antibodies and the generation of memory T cells.

Correct Answer: C

Rationale: Total Parenteral Nutrition (TPN) is a method of providing nutrition to patients who cannot or should not obtain their nutrition through regular oral intake. The primary goals of TPN include promoting weight gain, improving nutritional status, maintaining muscle mass, and establishing nitrogen balance. These goals are crucial to support the overall health and well-being of the patient receiving TPN. Enhancing the healing process is an important aspect of TPN as well, but it is not considered one of the primary goals as weight gain, nutritional status, muscle mass, and nitrogen balance are typically the immediate priorities when administering TPN.

Correct Answer: C

Rationale: The suicide of her mother is the most probable historical data that led to post-traumatic stress disorder. Experiencing the suicide of a close family member, especially a parent, can be an extremely traumatic event that can have long-lasting psychological effects. Witnessing or dealing with such a tragic loss can lead to feelings of helplessness, depression, guilt, and intense emotional distress, all of which are common in individuals with post-traumatic stress disorder (PTSD). This significant and distressing event could have a profound impact on the individual's mental health and well-being, contributing to the development of PTSD symptoms such as intrusive memories, avoidance behaviors, negative mood alterations, and changes in arousal or reactivity.

Correct Answer: C

Rationale: One of the main consequences of hypoxemia, which is low oxygen levels in the blood, is decreased oxygen saturation. Oxygen saturation refers to the percentage of hemoglobin molecules in the blood that are bound to oxygen. When there is insufficient oxygen in the blood due to hypoxemia, the oxygen saturation levels will drop. This can lead to symptoms such as shortness of breath, confusion, rapid heart rate, and ultimately can result in tissue damage if not corrected promptly. Monitoring oxygen saturation levels is crucial in the immediate post-operative phase to ensure adequate ventilation and oxygenation for the patient's recovery.

Correct Answer: C

Rationale: The pancreas is the structure responsible for producing digestive enzymes and bicarbonate-rich pancreatic juice. These enzymes aid in the breakdown of carbohydrates, fats, and proteins in the small intestine to facilitate the absorption of nutrients. The pancreas plays a crucial role in the process of digestion, making it an essential organ in the digestive system. The liver is primarily involved in producing bile to aid in the digestion of fats, the gallbladder stores bile produced by the liver, and the spleen is involved in filtering the blood and storing blood cells.