Which of the following hormones is most important in the initiation of gallbladder contraction following a fatty meal?
During a barroom fight, a 24-year-old man is hit with a bottle on the lateral aspect of the lower leg. The man receives a deep laceration about halfway down his lower leg, in the vicinity of the fibula. Following the injury, he loses sensation over most of the dorsum of the foot. Which of the following muscles is also innervated by the nerve that was likely damaged?
A Guatemalan child with a history of meconium ileus is brought to a clinic because of a chronic cough. The mother notes a history of respiratory tract infections and bulky, foul-smelling stools. After assessment of the respiratory tract illness, the physician should also look for signs of
A 4-year-old boy presents to the emergency room with muscle spasms. His past medical history is significant for recurrent infections and neonatal seizures. Evaluation of his serum electrolytes reveals hypocalcemia. This patient would be most susceptible to which of the following diseases?
To provide anesthesia to a patient in the third stage of labor, an obstetrician palpates the ischial spine transvaginally, then injects a local anesthetic. Injection of anesthetic at this approximate location will most likely block which of the following nerves?
A 45-year-old male presents to the physician with muscle cramps, perioral numbness, and irritability over the past 3 to 4 months. Lab results reveal hypocalcemia, normal albumin level, and hyperphosphatemia . Parathyroid hormone level is decreased. Alkaline phosphatase level is normal. Which of the following is most likely causing this clinical scenario?
A healthy, 37-year-old, recently divorced woman loses her job at th e auto factory. She picks up her three young children from the factory day care center and gets into an automobile accident on the way home. Her 5-year-old son, who was not wearing a seat belt, sustains a severe head injury. The woman was not hurt in the accident, but is hyperventilating as she sits in the waiting room at the hospital. She complains of feeling faint and has blurred vision. Which of the following is decreased in this woman?
A surgeon performs an exploratory laparotomy, producing a large incision in the patient's abdomen. Poor blood supply to which of the following is most likely to cause problems during the healing process?
Which of the following developmental abnormalities might account for unexplained small intestinal bleeding?
A 25-year-old woman with sickle cell anemia complains of steady pain in her right upper quadrant with radiation to the right shoulder, especially after large or fatty meals. Her physician diagnoses gallstones. Of which of the following compounds are these stones most likely composed?