Embryology — Flashcards

Flashcard 111: What congenital abnormality arises due to failure of fusion of the maxillary and medial nasal processes? _____

Answer: Cleft lip

Flashcard 112: Sternal defects occur due to failure of _____ fold closure of the ventral wall

Answer: rostral

Flashcard 113: Are extragonadal germ cell tumors in the sacrococcygeal and intracranial regions most commonly associated with adults or infants / young children? _____

Answer: Infants / Young Children

Flashcard 114: A(n) _____ is due to partial failure of the urachus to obliterate, resulting in a fluid-filled cyst

Answer: urachal cyst

Flashcard 115: What is the embryonic origin of melanocytes? _____

Answer: Neural crest

Flashcard 116: What is the adult derivative of the wall of the myelencephalon? _____

Answer: Medulla

Flashcard 117: What congenital anomaly is caused by cystic dilation of the vitelline duct? _____

Answer: Vitelline cyst (enterocyst)

Extra: Atlas:

Flashcard 118: Within which week of embryogenesis does the neural tube close? _____

Answer: Week 4

Flashcard 119: The midbrain (primary vesicle) matures into the _____ (secondary vesicle)

Answer: mesencephalon

Flashcard 120: Testosterone stimulates the growth and differentiation of the _____ ducts, which develop into the male internal genital tract

Answer: wolffian