A cup of lead pellets and cup of feathers both occupy 8 fl. oz. of volume. The lead will weigh a lot more than 8 ounces on a scale. The feathers will weigh a lot less than 8 ounces on a scale. 500 grams of mini marshmallows = 10 cups. 500 grams of flour = 4 cups.
The layer of the epineurium that extends within the nerve to define the fascicles is termed the internal epineurium. Together, these two layers form the epineurium, which varies in thickness along the course of a nerve. The epineurium is usually most abundant around joints, as its function is to protect the nerves from stretching and subsequent injury.
A nerve is usually made up from a variety of fascicles. Each fascicle is encased by perineurium. Inside the fascicle are a group of axons bathed in endoneurial fluid. Each axon has an insulating lining of myelin  a fatty material inside the Schwann cells. Between the fascicles is a fatty material called the interfascicular epineurium. The nerve is then wrapped in the main epineurium. Even if the sensitive living axons are damaged, the conduit made up of epineurium and perineurium will often survive and provide a pathway for regrowing nerves.