chalaza

[kuh-lay-zuh]

chalaza Definition

  • 1one of two spiral bands of tissue in an egg that connect the yolk to the lining membrane at either end of the shell
  • 2a membranous ridge on the side of a bird's bill near the base, to which the muscles that move the lower mandible are attached

Using chalaza: Examples

Take a moment to familiarize yourself with how "chalaza" can be used in various situations through the following examples!

  • Example

    The chalaza keeps the yolk centered in the egg.

  • Example

    The chalaza is a distinguishing feature of the bill of some bird species.

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Summary: chalaza in Brief

A 'chalaza' [kuh-lay-zuh] is one of two spiral bands of tissue in an egg that connect the yolk to the lining membrane at either end of the shell. It also refers to a membranous ridge on the side of a bird's bill near the base, to which the muscles that move the lower mandible are attached.