Exam 7: Histology

A 28-year-old woman, gravida 3 para 3, comes to the emergency department with severe abdominal pain in the left lower quadrant and vaginal bleeding.  She is saturating a pad every 3-4 hours.  Her last menstrual period was 6 weeks ago.  Past surgical history is significant for 3 cesarean deliveries and permanent sterilization via a bilateral tubal ligation.  A urine pregnancy test is positive, and an ultrasound shows a 2-cm mass in the left adnexa adjacent to the ovary and a thickened endometrial stripe.  If a uterine curettage is performed, which of the following findings would be expected in this patient?

A 64-year-old man is brought to the emergency department due to worsening shortness of breath.  The patient is able to speak in short sentences only and becomes hypoxemic with minimal exertion.  His medical history includes hypertension and dyslipidemia.  He smoked a pack of cigarettes a day for 40 years and worked for 25 years as a nickel miner.  His father died of chronic respiratory failure.  While in the emergency department, he rapidly develops respiratory failure and is intubated.  Despite appropriate treatment, he dies several days later in the intensive care unit.  Autopsy is performed, and examination of the bronchi reveals thickened bronchial walls, inflammatory infiltrates, mucous gland enlargement, and patchy squamous metaplasia of the bronchial mucosa.  Which of the following factors was likely the greatest contributor to this patient's pathological findings?

A 67-year-old man is found dead in his home.  The cause of death is not apparent; he had a long history of hypertension and he had a myocardial infarction a year ago.  An autopsy is performed.  Gross examination of the heart shows white scarring and enlargement of the left ventricle.  Histologic findings from a section of the left ventricle are shown below. The type of collagen seen in the autopsy sample is most likely to be extensively found in which of the following normal body tissues?

A 3-year-old girl is brought to her pediatrician for a well child checkup.  She has met all of the appropriate developmental milestones.  Her height corresponds to the 60^th percentile.  Osteoblasts near the growth plates of her long bones secrete matrix material, and when they become trapped in the ossified matrix, they become known as osteocytes.  These osteocytes remain connected to each other by: