Heart development — Flashcards

Flashcard 11: In the fourth step of atrial partitioning, the septum secundum expands and covers most of the foramen secundum, leaving the residual _____

Answer: foramen ovale

Flashcard 12: Failure of the septum primum and septum secundum to fuse after birth results in a(n) _____

Answer: patent foramen ovale

Flashcard 13: In the first step of atrial partitioning, the _____ grows toward the endocardial cushions, forming a narrow ostium primum

Answer: septum primum

Extra: Atlas:

Flashcard 14: What is the embryonic origin of the endocardial cushion and the aorticopulmonary septum? _____

Answer: Neural crest

Extra: Atlas:

Flashcard 15: In the first step of ventricular partitioning, the _____ interventricular septum develops and forms the interventricular foramen

Answer: muscular

Flashcard 16: In the infantile form, coarctation of the aorta lies _____ the aortic arch, but _____ the PDA

Answer: after

Extra: Atlas:

Flashcard 17: The mitral and tricuspid valves are derived from the fused _____ of the common AV canal

Answer: endocardial cushions

Extra: Atlas:

Flashcard 18: Tetralogy of Fallot is caused by _____ displacement of the infundibular septum

Answer: anterosuperior

Flashcard 19: Most of the highly oxygenated blood reaching the heart via the fetal IVC is directed from the RA to the LA via the _____ and pumped into the aorta to supply the head and body

Answer: foramen ovale

Flashcard 20: The embryonic _____ gives rise to the coronary sinus

Answer: left horn of sinus venosus