Bulbus cordis
(Redirected from Conotruncus)
Embryological structure in the developing heart
Bulbus cordis[edit | edit source]
The bulbus cordis is a crucial embryological structure in the developing heart of vertebrates. It plays a significant role in the formation of the heart's outflow tracts and is essential for proper cardiovascular development.
Development[edit | edit source]
The bulbus cordis arises during the early stages of heart development. It is one of the primary components of the primitive heart tube, which also includes the sinus venosus, atrium, ventricle, and truncus arteriosus. The bulbus cordis is located between the primitive ventricle and the truncus arteriosus.
During embryogenesis, the bulbus cordis undergoes significant morphological changes. It elongates and contributes to the formation of the right ventricle and the outflow tracts of both the right and left ventricles. The distal part of the bulbus cordis, known as the conus arteriosus, becomes incorporated into the outflow tracts of the heart.
Function[edit | edit source]
The primary function of the bulbus cordis is to facilitate the proper alignment and separation of the outflow tracts. This is crucial for the correct routing of blood from the heart to the lungs and the rest of the body. The bulbus cordis helps ensure that the pulmonary artery and the aorta are properly positioned and connected to their respective ventricles.
Clinical Significance[edit | edit source]
Abnormal development of the bulbus cordis can lead to congenital heart defects. These defects may include malformations such as tetralogy of Fallot, transposition of the great arteries, and double outlet right ventricle. Such conditions often require surgical intervention to correct the anatomical abnormalities and restore normal cardiac function.
Evolutionary Perspective[edit | edit source]
The bulbus cordis is an evolutionary adaptation that allows for the efficient separation of oxygenated and deoxygenated blood in vertebrates. This separation is vital for maintaining high metabolic rates and supporting complex organ systems.
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