tendons and ligaments
The cortex
They enable us to grasp objects.
Dermis
The Papillae are ridges in the stratum germinativum that arise from the dermis. These ridges create permanent ridges in the fingers, palms, and soles of the feet. These ridges or "friction ridges" help with grip and also cause "finger prints" which give us our own identity.
fingerprints
tendons and ligaments
The cortex
The brain is covered in ridges (gyri) ans grooves (sulci).
Corrugated iron.
The Threads on a Bolt are the ridges or grooves that screws into a Nut or into a metal frame or such.
What is the function of the transverse ridges in the hard palate of the pig
There are 119 ridges on the United States quarter dollar. The ridges are there mostly for making sure the coins are properly used in coin operated machines.
A zastruga is any of a series of long ridges or grooves formed on a snow surface by the wind, especially in polar plains.
The transverse ridges in the hard palate function to assist in moving food to the back of the mouth where it can be easily swallowed.
Ganymede's surface is heavily cratered and crossed by strange grooves and ridges, wich have been described as tire tracks in the desert
These ridges are fat and they allow the stomach to expand. This allows the stomach to store more food while digesting.
They enable us to grasp objects.