Blastula (also known as Blastulae): An early non-mammalian embryo that follows the MORULA stage. A blastula resembles a hollow ball with the layer of cells surrounding a fluid-filled cavity (blastocele). The layer of cells is called BLASTODERM.

NIH MeSH · D036703Anatomy

Blastula

Also known asBlastulae

Definition

An early non-mammalian embryo that follows the MORULA stage. A blastula resembles a hollow ball with the layer of cells surrounding a fluid-filled cavity (blastocele). The layer of cells is called BLASTODERM.

MeSH classification

  • A16.331.099

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Related concepts

Blastoderm

A layer of cells lining the fluid-filled cavity (blastocele) of a BLASTULA, usually developed from a fertilized insect, reptilian, or avian …

Blastodisc

A small whitish spot on the surface of the EGG YOLK where cleavage begins. Upon fertilization the cytoplasm streams from the vegetal pole aw…

Common questions about Blastula

What does Blastula mean in medicine?
An early non-mammalian embryo that follows the MORULA stage. A blastula resembles a hollow ball with the layer of cells surrounding a fluid-filled cavity (blastocele). The layer of cells is called BLASTODERM. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Blastula known by any other names?
Yes. Blastula is also referred to as Blastulae in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Blastula sit in the medical classification?
Blastula falls under the broader medical category "Anatomy" in the MeSH hierarchy (tree numbers: A16.331.099). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Blastula?
For a plain-language explanation of Blastula - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Blastula" above.

Source: NIH MeSH 2026 (D036703) — National Library of Medicine, public domain. View official MeSH record ↗