Strictly speaking , matrix management is the practice of managing individuals with more than one reporting line ( in a matrix organization structure ) , but it is also commonly used to describe managing cross functional , cross business group and other forms of working that cross the traditional vertical business units â often silos - of function ...
Echinoderms can have ambulacral parts that include ossicles, plates, spines, and suckers. For example, sea stars or star fish have an ambulacral groove on their oral side (underside).This ambulacral groove extends from the mouth to the end of each ray or arm. Each groove of each arm in turn has four rows of hollow tube feet that can be extended or withdrawn.Opposite the ambulacral groove is an ambulacral ridge on the aboral side of each ray, known as an ambulacrum.chinoderms can have ambulacral parts that include ossicles, plates, spines, and suckers. For example, sea stars or star fish have an ambulacral groove on their oral side (underside).
Rows of tube-feet lie within these grooves. The ambulacral grooves are supported by a definite arrangement of ossicles: two rows of rod-shaped ambulacral ossicles form the V-shaped ambulacral groove itself. Where these meet they form the prominent ambulacral ridge on their inner surface.bove: the oral surface of a starfish. The mouth is visible in the centre of the disc, in the middle of a circular or pentagonal peristomial membrane or peristome (shown in darker orange). A groove, called the ambulacrum, extends from the tip of each arm toward the peristome.