Cardiovascular Embryology Flashcards

1
Q

The endothelial layer of the tube forms the:

A

Endocardium

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2
Q

Splanchnic mesoderm surrounding the heat tube will form the:

A

Myocardium

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3
Q

The truncus arteriosus becomes:

A

Proximal aorta and proximal pulmonary artery

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4
Q

The primitive ventricle becomes:

A

Trabeculated right and left ventricles

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5
Q

The sinus venosus becomes:

A

Smooth part of right atrium, coronary sinus and oblique vein

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6
Q

The bulbus cordis becomes:

A

Smooth parts of the right ventricle and part of left ventricle

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7
Q

The primitive atrium becomes:

A

Right and left atria

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8
Q

During cardiac development neural crest cells form:

A

Septation of the outflow tract.

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9
Q

The fibrous portion of the cardiac valves are formed by:

A

Endocardial cells that differentiate into mesenchymal cells

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10
Q

AV valve formation (2):

A
  • Delamination of leaflets from the superficial layers of ventricular myocardium
  • Incorporate endocardial cushions and maintain fibrous continuity with trabeculated portion of the ventricle
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11
Q

Membranous ventricular septum is formed by the fusion of (3):

A
  • Right bulbar ridge of bulbus cordis
  • Left bulbar ridge of bulbus cordis
  • Atrioventricular septum (“endocardial cushions”)
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12
Q

The first aortic arch forms:

A

Maxillary and external carotid artery

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13
Q

The second aortic arch forms:

A

Stapedial and hyoid aa.

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14
Q

The third aortic arch forms:

A

Common carotid aa. and proximal internal carotid aa

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15
Q

The fourth aortic arch forms:

A

Left side: aortic arch

Right side: innominate/subclavian

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16
Q

The sixth aortic arch forms:

A
  • Proximal portions: RPA and LPA

- Distal left portion: ductus arteriosus