223 Midterm questions and answers with
solutions
6 - ANSWER In the four-chamber view at 18-weeks' gestation, the ventricles should each
measure approximately _______ millimeters (mm)
Atrial septal defect - ANSWER Which one of the following abnormalities is communication
between the right and left atrium that persists after birth?
Sinoatrial node - ANSWER Which one of the following structures forms in the wall of the sinus
venosus near its opening into the right atrium?
Septum Primum - ANSWER The ___________ is the first part of the atrial septum to grow from
the dorsal wall of the primitive atrium. It fuses with the endocardial cushions.
3 - ANSWER The embryonic vascular system begins during the _____ week.
embryo - ANSWER The cardinal vein returns blood from which one of the following?
Amnion - ANSWER The primitive cardiovascular system is formed by blood vessels including all
of the following structures except:
Sinus venosus - ANSWER The caudal region of the primitive heart is called the _______.
Bulbus Cordis - ANSWER The right ventricle is formed from __________
solutions
6 - ANSWER In the four-chamber view at 18-weeks' gestation, the ventricles should each
measure approximately _______ millimeters (mm)
Atrial septal defect - ANSWER Which one of the following abnormalities is communication
between the right and left atrium that persists after birth?
Sinoatrial node - ANSWER Which one of the following structures forms in the wall of the sinus
venosus near its opening into the right atrium?
Septum Primum - ANSWER The ___________ is the first part of the atrial septum to grow from
the dorsal wall of the primitive atrium. It fuses with the endocardial cushions.
3 - ANSWER The embryonic vascular system begins during the _____ week.
embryo - ANSWER The cardinal vein returns blood from which one of the following?
Amnion - ANSWER The primitive cardiovascular system is formed by blood vessels including all
of the following structures except:
Sinus venosus - ANSWER The caudal region of the primitive heart is called the _______.
Bulbus Cordis - ANSWER The right ventricle is formed from __________
