A muscular enlarged pouch or sac that lies slightly to left which is used for temporary storage of food…

Correct Answer: C. Stomach

The stomach is a muscular organ located on the left side of the upper abdomen. It is a saclike expansion of the digestive tract of a vertebrate that is located between the esophagus and duodenum. The major part of the digestion of food occurs in the stomach.

• Option A: The gallbladder is a small hollow organ about the size and shape of a pear. It is a part of the biliary system, also known as the biliary tree or biliary tract. The biliary system is a series of ducts within the liver, gallbladder, and pancreas that empty into the small intestine. There are intrahepatic (within the liver) and extrahepatic (outside of the liver) components. The gallbladder is a component of the extrahepatic biliary system where bile is stored and concentrated.
• Option B: The bladder forms an integral part of the genitourinary system. Urine, created by the kidneys, is drained into the bladder by the bilateral ureters. The bladder then acts as the storage site for this waste product until higher-order centers within the central nervous system initiate the micturition (i.e., urination) process, which permits the expulsion of urine into the urethra, located on the inferior aspect of the bladder.
• Option D: The purpose of the lung is to provide oxygen to the blood. Anatomically, the lung has an apex, three borders, and three surfaces. The apex lies above the first rib. The function of the lung is to get oxygen from the air to the blood, performed by the alveoli. The alveoli are a single cell membrane that allows for gas exchange to the pulmonary vasculature. There are a couple of muscles that help with inspiration and expiration, such as the diaphragm and intercostal muscles.
• Option E. The inner layer of the stomach is full of wrinkles known as rugae (or gastric folds). Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food during digestion