A pathologist examining a tissue sample notes the presence of pseudostratified columnar epithelium with goblet cells and cilia. This tissue was most likely obtained from which of the following locations?
ABronchi
BSmall intestine
CSkin
DEsophagus
EUrinary bladder
An investigator is studying cellular repair mechanisms in various tissues. One of the samples being reviewed is from the anterior horn of the spinal cord of a patient who was involved in a snowboard accident. Pathologic examination of the biopsy specimen shows dispersion of the Nissl bodies, swelling of the neuronal body, and a displacement of the nucleus to the periphery in numerous cells. Which of the following is the most likely explanation for the observed findings?
ANeurodegenerative changes
BNeuronal aging
CCentral chromatolysis
DReactive astrogliosis
EWallerian degeneration
A 28-year-old woman and her husband are admitted to the office due to difficulties conceiving a child for the past year. Her menarche was at the age of 15 years, and her periods have been regular since then. Her medical history is positive for an abortion with curettage 5 years ago. A spermogram on the partner is performed, and it shows motile sperm cells. An ultrasound is performed on the patient and it is unremarkable. The laboratory results show that the FSH, LH, TSH, and prolactin levels are within normal ranges. A hysteroscopy is additionally performed and multiple adhesions are found in the uterus (refer to the image). Which of the following is the most likely composition of the scar tissue present in the uterus?
AType 3 collagen
BType 4 collagen
CType 2 collagen
DType 1 collagen
EElastin
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