The saddle gullet is the cutout or tunnel underneath the fork and rides over the horse's withers. The design of the fork and the angle of the bars of the saddle tree determine the width and height of the gullet. It's important that the gullet have the right amount of clearance over the withers. If the gullet height is too short, the saddle will rub on the horse's withers. If the gullet width is too wide, the saddle will sit too low on the shoulders, and also rub on the horse's withers. Rubbed withers equals unhappy horse. A good rule of thumb to use for gullet fit is that there should be clearance of two to four fingers-widths between the withers and the gullet.
Network of protein fibers that provides structural support; aides in cell movement and movement of vesicles within the cell endoplasmic reticulum Extensive network of membrane-bound tubules and sacs that can be classified as rough or smooth; continuous with the nuclear envelope; provide compartments and surface area for reactions to occur
Since plants do not have skeletons, they require cells that are bound together and have a strong outer layer known as a cell wall. Sclerenchyma cells are strong, thick, cells that provide most of the support in a plant. They are known to have extremely thick cell walls to provide structure for the growing plant.