ambulacrum Definition
one of the radial areas in echinoderms, such as the starfish and sea urchin, that contains the tube feet used for locomotion and respiration.
Using ambulacrum: Examples
Take a moment to familiarize yourself with how "ambulacrum" can be used in various situations through the following examples!
Example
The ambulacra of the sea urchin are used for movement and feeding.
Example
The starfish's ambulacra are located on the underside of its arms.
Phrases with ambulacrum
a raised area along the midline of each ambulacrum in some echinoderms, which contains the madreporite and is often used for classification purposes
Example
The ambulacral ridge is a distinguishing feature of certain species of sea urchins.
a depression along the midline of each ambulacrum in some echinoderms, which contains the tube feet and is often used for classification purposes
Example
The ambulacral groove is a distinguishing feature of certain species of starfish.
one of the ossicles that make up the ambulacrum in echinoderms, which support the tube feet and are often used for classification purposes
Example
The ambulacral plates of the sand dollar are covered in tiny spines.
Origins of ambulacrum
from Latin 'ambulare', meaning 'to walk'
Summary: ambulacrum in Brief
'Ambulacrum' [am-byuh-ley-kruhm] refers to one of the radial areas in echinoderms, such as the starfish and sea urchin, that contains the tube feet used for locomotion and respiration. The ambulacra are located on the underside of the arms of starfish and are used for movement and feeding. Other features of the ambulacra include the ambulacral ridge, ambulacral groove, and ambulacral plate.
