Embryology — Flashcards

Flashcard 91: Which form of spina bifida is associated with herniation of meninges (but no neural tissue) through the bony defect? _____

Answer: Meningocele

Extra: * due to posterior neural tube defect

Flashcard 92: The alveolar period of lung development occurs from weeks _____ to _____

Answer: 36

Flashcard 93: During the _____ period (lung development), the terminal sacs form the adult alveoli

Answer: alveolar

Flashcard 94: What is the embryonic origin of astrocytes? _____

Answer: Neural tube (neuroectoderm)

Flashcard 95: What congenital abnormality arises due to failure of fusion of the two lateral palatine shelves? _____

Answer: Cleft palate

Flashcard 96: Bladder exstrophy occurs due to failure of _____ fold closure of the anterior abdominal wall

Answer: caudal

Flashcard 97: Chromaffin cells migrate into the adrenal medulla to form _____-ganglionic sympathetic neurons

Answer: post

Flashcard 98: During the canalicular period of lung development, the bronchioles are surrounded by a(n) _____ capillary network

Answer: prominent

Flashcard 99: In the developing ovaries, primordial germ cells produce _____ by mitotic divisions until gestational weeks 20 to 24

Answer: oogonia

Flashcard 100: Bones of the calvarium, facial bones, and clavicle are formed via _____ ossification

Answer: membranous