anterior cardinal vein
Học thuậtThân thiện
Definition
Noun: A major blood vessel in early embryonic development that drains blood from the head and neck region (the cephalic part of the body) and is part of the initial venous system. These veins are precursors to parts of the adult venous system.
Usage
The term "anterior cardinal vein" is used specifically in the context of embryology and comparative anatomy to describe a transient developmental structure. * During the fourth week of human development, the paired anterior cardinal veins collect blood from the head and neck. * The anterior cardinal veins eventually contribute to the formation of the internal jugular veins.
Advanced Usage
- The anterior cardinal veins fuse with the posterior cardinal veins to form the common cardinal veins, which drain into the sinus venosus of the primitive heart.
- Remnants of the left anterior cardinal vein can sometimes persist in adults as the oblique vein of the left atrium.
Variants and Related Words
- Common cardinal vein: The vein formed by the union of the anterior and posterior cardinal veins.
- Posterior cardinal vein: The embryonic vein that drains the caudal (tail) part of the body, paired with the anterior cardinal vein.
- Cardinal venous system: The collective term for the early embryonic venous network, including the anterior, posterior, and common cardinal veins.
Synonyms
- Precardinal vein (a less common synonym used in some anatomical texts).
Related Phrases
- Development of the anterior cardinal vein: Refers to the process by which this structure forms and transforms.
- Regression of the anterior cardinal vein: Describes the normal process where parts of this embryonic vein disappear.
Noun
- a major drainage channel from the cephalic part of the body