Crista terminalis | |
---|---|
Details | |
Identifiers | |
Latin | crista terminalis atrii dextri |
TA98 | A12.1.01.003 |
TA2 | 4025 |
FMA | 9236 |
Anatomical terminology |
The crista terminalis (also known as the terminal crest,[ citation needed] or crista terminalis of His [1]) is a vertical ridge on the [2]: 56 posterolateral [3] inner surface of the adult right atrium extending between the superior vena cava, and the inferior vena cava. [2]: 56 The crista terminalis denotes where the junction of the embryologic sinus venosus and the right atrium occurred during embryonic development. [3] It forms a boundary between the rough [2]: 56 trabecular [4] portion and the smooth, sinus venosus-derived portion (sinus venarum) of the internal surface of the right atrium. The sinoatrial node is located within the crista terminalis. [2]: 56
The crista terminalis generally takes the form of a smooth-surfaced, crescent-shaped thickened portion of heart muscle at the opening into the right atrial appendage.[ citation needed] It consists of fibromuscular tissue. [3]
On the external aspect of the right atrium, corresponding to the crista terminalis, is a groove - the terminal sulcus.[ citation needed]
The crista terminalis provides the origin for the pectinate muscles.[ citation needed]
The sinoatrial node is located in the superior part of the crista terminalis at the junction of the right atrium, and superior vena cava. [2]: 60
During the development of the human heart, the right horn and transverse portion of the sinus venosus ultimately become incorporated with and form a part of the adult right atrium. [1] The right sinus horn [4] of the sinus venosus develops into the sinus venarum; in the adult right atrium, the portion of right atrium derived from the sinus venosus has a smooth inner surface. [2]: 56
A prominent crista terminalis may be mistaken for a cardiac mass during heart imaging; a prominent crista terminalis appears as a hyperechoic ridge on echocardiography, and homogenous to adjacent atrial wall on CT and MRI. [3]
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Crista terminalis | |
---|---|
Details | |
Identifiers | |
Latin | crista terminalis atrii dextri |
TA98 | A12.1.01.003 |
TA2 | 4025 |
FMA | 9236 |
Anatomical terminology |
The crista terminalis (also known as the terminal crest,[ citation needed] or crista terminalis of His [1]) is a vertical ridge on the [2]: 56 posterolateral [3] inner surface of the adult right atrium extending between the superior vena cava, and the inferior vena cava. [2]: 56 The crista terminalis denotes where the junction of the embryologic sinus venosus and the right atrium occurred during embryonic development. [3] It forms a boundary between the rough [2]: 56 trabecular [4] portion and the smooth, sinus venosus-derived portion (sinus venarum) of the internal surface of the right atrium. The sinoatrial node is located within the crista terminalis. [2]: 56
The crista terminalis generally takes the form of a smooth-surfaced, crescent-shaped thickened portion of heart muscle at the opening into the right atrial appendage.[ citation needed] It consists of fibromuscular tissue. [3]
On the external aspect of the right atrium, corresponding to the crista terminalis, is a groove - the terminal sulcus.[ citation needed]
The crista terminalis provides the origin for the pectinate muscles.[ citation needed]
The sinoatrial node is located in the superior part of the crista terminalis at the junction of the right atrium, and superior vena cava. [2]: 60
During the development of the human heart, the right horn and transverse portion of the sinus venosus ultimately become incorporated with and form a part of the adult right atrium. [1] The right sinus horn [4] of the sinus venosus develops into the sinus venarum; in the adult right atrium, the portion of right atrium derived from the sinus venosus has a smooth inner surface. [2]: 56
A prominent crista terminalis may be mistaken for a cardiac mass during heart imaging; a prominent crista terminalis appears as a hyperechoic ridge on echocardiography, and homogenous to adjacent atrial wall on CT and MRI. [3]
{{
cite book}}
: CS1 maint: location missing publisher (
link)
{{
cite book}}
: CS1 maint: location missing publisher (
link)