Example-IP Rating. With the IP rating IP 54, 5 describes the level of protection from solid objects and 4 describes the level of protection from liquids. An X can used for one of the digits if there is only one class of protection, i.e.IPX1 which addresses protection against vertically falling drops of water e.g. condensation..ith the IP rating IP 54, 5 describes the level of protection from solid objects and 4 describes the level of protection from liquids.
The bladder is the organ that stores urine. Urine is made in the kidneys and passes to the bladder down two tubes called the ureters. The bladder is a stretchy bag made of muscle tissue. It can store about 500mls (or 3 cups) of urine.rine is made in the kidneys and passes to the bladder down two tubes called the ureters. The bladder is a stretchy bag made of muscle tissue. It can store about 500mls (or 3 cups) of urine.
Four different types of tissue make up all the organs and tissues in the body. These are: 1  Epithelia-covering cells. 2  Connective tissue - 'space filling' tissue. 3  Muscle-either striated or smooth. 4  Nerves.our different types of tissue make up all the organs and tissues in the body. These are: 1  Epithelia-covering cells. 2  Connective tissue - 'space filling' tissue. 3  Muscle-either striated or smooth. 4  Nerves.