Primitive ventricle

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Embryonic ventricle
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Tubular heart of human embryo of about fourteen days.
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Interior of dorsal half of heart from a human embryo of about thirty days.
Details
Carnegie stage 11
Gives rise to trabeculated parts of right ventricle, left ventricle
System Cardiovascular system
Identifiers
Latin ventriculus embryonicus
TE E5.11.1.3.1.0.2
Anatomical terminology

The primitive ventricle or embryonic ventricle of the developing heart, together with the bulbus cordis that lies in front of it, gives rise to the left and right ventricles. The primitive ventricle provides the trabeculated parts of the walls, and the bulbus cordis the smooth parts.

Contents

The primitive ventricle becomes divided by the septum inferius which develops into the interventricular septum. The septum grows upward from the lower part of the ventricle, at a position marked on the heart's surface by a furrow.

Its dorsal part increases more rapidly than its ventral portion, and fuses with the dorsal part of the septum intermedium.

For a time an interventricular foramen exists above its ventral portion, but this foramen is ultimately closed by the fusion of the aortic septum with the ventricular septum.

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References

This article incorporates text in the public domain from page 512 of the 20th edition of Gray's Anatomy (1918)

The public domain consists of all the creative works to which no exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable.

<i>Grays Anatomy</i> English-language textbook of human anatomy

Gray's Anatomy is an English language textbook of human anatomy originally written by Henry Gray and illustrated by Henry Vandyke Carter. Earlier editions were called Anatomy: Descriptive and Surgical, Anatomy of the Human Body and Gray's Anatomy: Descriptive and Applied, but the book's name is commonly shortened to, and later editions are titled, Gray's Anatomy. The book is widely regarded as an extremely influential work on the subject, and has continued to be revised and republished from its initial publication in 1858 to the present day. The latest edition of the book, the 41st, was published in September 2015.


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