Lectus

A 23-year-old man presents to a primary care provider because he complained of a few days of diarrhea, vomiting, and fever. He is diagnosed with bacterial gastroenteritis based on his stool tests. Being a microbiology student, he is aware that the epithelial linings of the gastrointestinal, respiratory, and skin act as barriers to infection, but he forgot the role of specific T cells in innate immunity. He asked the provider if he knew. Which of the following specific T cells are involved in the recognition of microbial lipids?Deselect Answer

A 33-year-old woman presents to the emergency department with pain in her right wrist. She says that she was walking on the sidewalk a few hours ago, when she slipped and landed forcefully on her outstretched right hand with her palm facing down. Vital signs are within normal limits. Physical exam reveals mild swelling of the right wrist and tenderness on the lateral aspect of the right hand with a decreased range of motion. Sensation is intact. The patient is able to make a fist with her right hand. A plain radiograph of her right wrist is shown in the image. Which of the following bones is most likely fractured in this patient?Deselect Answer

A 72-year-old woman presents to her primary care physician for her annual wellness visit. Her daughter, who accompanies her, reports that the patient has been less interested in her usual activities like gardening and attending church for the past 3 months. The patient has lost 5 pounds unintentionally during this time and often complains of feeling tired. She has a history of hypertension and osteoarthritis. Her laboratory values, including thyroid function tests, complete blood count, and comprehensive metabolic panel, are within normal limits. Which of the following is the most appropriate initial screening tool to assess this patient's emotional health?Deselect Answer

A 40-year-old woman presents to the physician with complaints of frequent headaches and fatigue that have lasted for a month. Her headaches are mild and occur randomly, and are relieved by over-the-counter analgesics. Furthermore, she frequently feels tired and occasionally feels short of breath with exertion. She has no symptoms of depression. She was diagnosed with Crohn disease 20 years ago and is currently taking methotrexate. Additionally, she takes a folic acid-containing multivitamin daily. Her medical history is otherwise non-significant. She does not smoke, drink, or use recreational drugs. Her heart rate is 110/min, respiratory rate is 20/min, and temperature is 37.0°C (98.6°F). Physical examination reveals pallor of her palmar creases and lower conjunctiva. Which of the following arterial blood findings for the partial pressure of oxygen (PaO2), oxygen saturation (SaO2), and oxygen concentration (CaO2) are expected in this patient?Deselect Answer