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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
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electrical propagation to be transmitted from the =
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Sinoatrial Node
through both atria and forward to the Atrioventricular Node. |
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Conduction System
How they are developed: At week __ cardiac myocytes in the sinus venosus region of the primitive heart tube begin to undergo spontaneous electrical depolarizations at a faster rate than cardiac myocytes in other regions. |
5
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Conduction System
How they are developed: At week 5, cardiac myocytes in the ____ _______ region of the primitive ____ ____ begin to undergo spontaneous electrical depolarizations at a faster rate than cardiac myocytes in other regions. |
sinus venosus
heart tube |
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Conduction System
How they are developed: At week 5, cardiac myocytes in the sinus venosus region of the primitive heart tube begin to undergo = |
spontaneous electrical depolarizations at a faster rate than cardiac myocytes in other regions.
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As dextral looping (bulboventricular looping) occurs, the sinus venous becomes incorporated into the right atrium, and these fast-rate depolarizing cardiac myocytes become the =
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sinoatrial (SA) node and
atrioventricular (AV) node. |
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AV bundle or bundle of His develops from a
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ring like cluster of cells found at the AV junction that specifically expresses the
homeobox gene, msx-2. |
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The intramural network of Purkinje myocytes have a distinct embryologic origin (versus the bundle of His) in that Purkinje myocytes develop from already contractile cardiac myocytes within the =
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myocardium and can therefore be considered as modified cardiac myocytes.
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ventricular septal defects
The critical period of cardiac development is from day __ to day __ after fertilization |
20 - 50 day
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Development of great vessels (vascular system)
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Development of great vessels (vascular system)
When the branchial arches form during week __ and __, they are penetrated by arteries arising from the aortic sac, which are called the ______ _______ |
4th
5th aortic arches. |
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Development of great vessels (vascular system)
During week ___ to __ the primitive aortic arch pattern is transformed into the adult arterial arrangement of = 3ct |
6 to 8
carotid, subclavian, pulmonary arteries. |
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In case of ASD has what heart sound
______ componant _______ componant |
fixed splitting
Aortic Pulmonary |
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Aortic arches
1st aortic arch 2nd aortic arch 3rd aortic arch 4th aortic arch 4th aortic arch 6th aortic arch 6th aortic arch |
(R and L): part of the maxillary artery and external carotid arteries
(R and L): stapedial arteries, part of external carotids (R and L): part of common carotids and first part of the internal carotids (R): proximal part of the right subclavian artery. (L): part of arch of the aorta just proximal to the left subclavian artery (R): proximal part of right pulmonary artery (L= ductus): proximal left pulmonary artery and ligamentum arteriosum Ductus arteriosus: ligamentum arteriosum Dorsal aorta (R and L): part of right subclavian, descending aorta below left subclavian |
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Ductus arteriosus
becomes the = |
: ligamentum arteriosum
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