The cerebral cortex
A walnut can become a fossil through a process called permineralization, where minerals replace the organic material of the walnut over time. This preserves the structure of the walnut in stone, creating a fossil. Over millions of years, the surrounding sediment hardens, forming a mineral cast of the walnut.
The fruit that is similar in size and shape to a human brain is the walnut.
Walnut
The folds of the brain cortex increase the surface area. Because the processing of the brain is done in the cortex, having an increased surface area allows for more processing power.
That tree is most likely the Osage orange tree (Maclura pomifera), also known as the hedge apple tree. The fruit of this tree is large, bumpy, and green, resembling a brain or a wrinkled orange. They are not typically eaten by humans but can be used for natural repellents.
The brain would not be able to fold into the skull, if it wasn't folded (wrinkled).
The cerebral cortex
because it looks like a brain.
the brain
a walnut
A sloths brain is only about the size of a walnut.
Stegosaurus had a brain that weighed about 2.8 oz, the same as a dog's brain. That is very small considering that the Stegosaurus was 30 feet long and weighed 5.5 tons. People often say that its brain was the size of a walnut or a pea, but that exaggerates its small size.
A walnut can become a fossil through a process called permineralization, where minerals replace the organic material of the walnut over time. This preserves the structure of the walnut in stone, creating a fossil. Over millions of years, the surrounding sediment hardens, forming a mineral cast of the walnut.
Its look like the inside of a walnut.
walnut
Having a wrinkled brain is good because in order for our brains to be higher functioning, they have to be big. More surface area equals more brain cells, which equals more thinking power. The brain is wrinkled so that it can have a lot of surface area, but will still fit within our skulls and be proportional to the rest of the human body. The wrinkles in our brains are there from birth, and do not change as we grow older.