The pancreas belongs to two systems of the body: the digestive system for its role and therefore functions as an exocrine gland as it excretes enzymes to break down the proteins, lipids, carbohydrates, and nucleic acids in food. And is also a part of the endocrine system as it produces hormones.

Blood cells and plasma proteins are not filtered through the glomerular capillaries because they are relatively larger in physical size. However water and salts are forced out of the glomerular capillaries and pass into the Bowman's Capsule and are called the glomerular filtrate.

Experts may have to do DNA fingerprinting with a very small amount of sample to identify a person, living or dead. Polymerase chain reaction helps them to amplify the sample.

The main functions of the nasal cavity are to moderate the temperature of inhaled air, and to filter out dust and other particles