Which organ of the alimentary canal contains 3 layers of muscle within the muscularis?

A 26-year-old woman at 14 weeks of gestation presents for routine prenatal care. A clean-catch midstream urine specimen is collected for in-office chemical analysis. The dipstick flags positive for glucose and leukocyte esterase. The sample is submitted to the lab for culture.  After 24 hours of incubation, the culture shows >100 colonies of Escherichia coli. A repeat urine culture collected 48 hours later yields the same result: >100 colonies of E. coli, and a rare colony of yeast that is presumptively identified as Candida albicans.    The provider calls to discuss the significance of the culture reports. The patient denies any symptoms of pelvic discomfort or pain during urination. What is the recommended course of action for this patient?  

Select which organism(s) may appear as non-lactose fermenters on MAC, but ferment sugars present in XLD and HE agar?

Several students at a university report developing nausea, vomiting, and abdominal cramps approximately 2–4 hoursafter eating fried rice at a campus dining event. Most recover within 24 hours without medical treatment. The health department investigates and collects leftover food and stool specimens from symptomatic individuals. Which of the following is the most likely causative organism, and what is the primary mechanism of illness?  

A 25-year-old man presents with fever, abdominal cramps, and frequent bloody diarrhea. He reports recent travel to a developing country and consumption of unpasteurized dairy products and street food. A stool specimen is submitted for testing. A fecal leukocyte smear is ordered. Microscopic examination of a stool smear shows many polymorphonuclear leukocytes (PMNs). Which of the following pathogens is most consistent with these clinical and laboratory findings?    

A 34-year-old male presents to an STI clinic with painful genital ulcers and tender inguinal lymphadenopathy. He reports unprotected sexual contact during recent travel. A swab is collected from the ulcer base and submitted for culture and Gram stain. Gram stain shows small, gram-negative coccobacilli.  The organism fails to grow on standard media after 48 hours. On day 3 there is 2+ growth of a small, gray colony on the CHOC plate, and a small amount of growth on the SBA plate. The MAC and MTM plates show no growth.  Which organism should be suspected? 

What type of tissue anchors the skin to underlying structures?

Which tool is commonly used to smooth wax applied over areas with subcutaneous tissue loss?

What pigment determines skin color and protects against UV radiation?

What is the small eminence located opposite the tragus?