carina
Học thuậtThân thiện
Definition
- Noun:
- A keel-shaped anatomical structure or ridge: In biology, a "carina" refers to any ridge or structure resembling a ship's keel, such as the ridge on a bird's breastbone or the structure formed by fused petals in certain flowers.
- A constellation in the southern sky: In astronomy, "Carina" is the name of a constellation shaped like a keel, originally part of the larger constellation Argo Navis. It contains the bright star Canopus.
Usage Examples
- Noun (Anatomical):
- The surgeon noted the prominence of the carina at the bifurcation of the trachea.
- In botany, the carina of a pea flower is formed by two fused petals.
- Noun (Astronomical):
- The constellation Carina is best viewed from the Southern Hemisphere.
- Eta Carinae, a famous star system, is located within the Carina constellation.
Advanced Usage
- "Carina of the trachea": A specific anatomical term for the ridge at the point where the trachea (windpipe) splits into the two main bronchi.
- The biopsy was taken from the area near the carina of the trachea.
Variants and Related Words
- Carinal (adj): Pertaining to or resembling a carina.
- The carinal angle was measured on the X-ray.
- Carinate (adj): In biology, having a carina or keel-shaped structure.
- Carinate birds have a prominent keel on the sternum for flight muscle attachment.
Synonyms
- Keel (n): The central structural base or ridge, especially in a botanical or anatomical context.
- Ridge (n): A long, narrow elevated structure.
Related Terms (Context-Specific)
- Tracheal bifurcation: The point of division where the carina is located.
- Argo Navis: The historic, large constellation from which Carina was subdivided.
Noun
- any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom
- a keel-shaped constellation in the southern hemisphere; contains the start Canopus