In the glucose molecule, the chemical bonds between the. carbon (C) and hydrogen (H) atoms hold energy from the sun. 1. When our. bodies extract energy from food and convert it to a form that our cells can. use, we lose more than half of the total food energy as heat.
These secretions flow to the surface of the body or to the lining of a hollow structure in the body. The exocrine secretions are involved in many important functions, such as sweating, digestion and lubricating the eyes.There are many types of exocrine glands in the exocrine system.xamples include the salivary glands, liver, stomach, prostate, lacrimal glands, pancreas, sweat glands, sebaceous glands, and mammary glands. A few examples of conditions that afflict the exocrine system include infection, ulcer, cancer, tumors, obstruction, genetic conditions and sebaceous cysts.
Chief Cells. The other type of exocrine secretory cell in the stomach is the chief cell. Chief cells secrete digestive enzymes that cleave the proteins in food into smaller pieces. The main enzyme secreted by chief cells is pepsin.he stomach is an organ of the digestive system. The inner wall of the stomach contains small pores called gastric pits. These pits contain cells that secrete chemicals that digest food. The two main types of exocrine secretory cells of the stomach are parietal cells and chief cells.