79 An infant is born with a sacrococcygeal teratoma Biopsy

Last updated: 2/5/2023

79 An infant is born with a sacrococcygeal teratoma Biopsy and histologic analysis reveal that it contains intestinal epithelia cardiac muscle cartilage and integument tissue You counsel the mother that the tumor is benign and recommend surgical removal This tumor was caused by which developmental anomaly failure of somite formation B failure of primitive streak formation failure of primitive streak regression D failure of notochord formation 81 Which of the following cells is indicated by the arrow on the histologic slide below A macrophage B mast cell goblet cell D basal cell 80 A 25 year old female pre obstetrican after taking a home pregnancy test with a positive results She states that twins run in her family and would like an ultrasound to determine if she has a twin pregnancy Radiographic studies confirm that the embryo has split at the blastocyst stage Splitting of the embryo at the blastocyst stage results in which of the following conjoined twins B dizygotic twins monozygotic twins D faternal twins 82 Which of the following tissues is presented on the histologic slide below A Simple squamous Simple cuboidal C Simple columnar D Pseudostratified DROGE