Septum spurium
Septum spurium | |
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![]() Interior of dorsal half of heart from a human embryo of about thirty days. (Septum spurium labeled at upper left.) | |
![]() Interior of dorsal half of heart of human embryo of about thirty-five days. (Septum spurium labeled at upper left.) | |
Anatomical terminology [edit on Wikidata] |
During development of the heart, the orifice of the sinus venosus lies obliquely, and is guarded by two valves, the right and left venous valves; above the opening these unite with each other and are continuous with a fold named the septum spurium.
References
This article incorporates text in the public domain from page 510 of the 20th edition of Gray's Anatomy (1918)
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Human embryonic development in the first three weeks
- Fertilization
- Oocyte activation
- Zygote
- Cleavage
- Blastomere
- Morula
- Cavitation
- Blastocoel
- Blastocyst
- Inner cell mass
- Trophoblast
(Bilaminar)
- Hypoblast
- Epiblast
(Trilaminar)
Germ layers | |
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Ectoderm | |
Endoderm | |
Mesoderm |
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