Do you mean crenulated, if so it is a margin with finely notched or rounded projections as on certain leaves. If you mean crenelated, that is a parapet or molding, as on the battlements of a castle.
The inner lining of the intestine has folds in it so as to increase the surface are. This greater aids in the absorption of nutrients from the gut. The larger the surface area, the greater the rate of absorption.
Gyri
No, because there is no such thing as the celestial sphere. So there is no inner surface of a celestial sphere.
To vibrate air into the inner ear so that the sound waves can eventually be interpruted (lots to it) by your brain
It all begins in the inner ear. In the inner ear, contains fluid. The fluid is also responsible for your balance.This tells your brain about the direction you're moving in. Now for example, say that you are reading a book in a moving car. Your inner ear is telling the brain that you're moving. But your eyes are on the book, so they tell the brain that you're not moving. The two information doesn't fit together, so this is what is causing car sickness in most people.
Folded layers of the inner membrane in mitochondria are called cristae. They play a crucial role in increasing the surface area of the inner membrane, where many of the proteins involved in cellular respiration are located.
The actual reason is that your eyes are telling your brain that you are moving, but the inner ears are telling your brain that you are sitting still. The brain cannot make sense of these opposing inputs, so it makes you dizzy and prone to vomiting.
This greatly increases the surface area of the membrane so that carbohydrates (simple sugars) can combine with oxygen to produce ATP.
The inner core of the Earth is believed to be made up of solid iron and nickel. It is so deep beneath the Earth's surface that its color is not visible.
The folded inner membrane of the mitochondria, known as cristae, increases the surface area available for cellular respiration reactions. This allows for more efficient production of ATP, the cell's primary energy source.
A concaved shape is one that is curved like the inner surface of a sphere. (Think about something that is cave-like.) The opposite, a convex surface, is one that is shaped like the outer surface of a sphere. So the mirror in a telescope has a concaved surface, as does the inside of a bowl and the surface of a crater or valley.