Table of Contents
Introduction
The study examines the relationship between narcissism and aggression. It is hypothesized that narcissism will be positively related to aggression. The study used a sample of 108 undergraduate students. The results of the study found that narcissism was positively related to aggression.
The study found that narcissism was positively related to aggression. This means that as narcissism levels increase, aggression levels also increase. This is important because it can help to explain why some people are more aggressive than others. It may also help to inform interventions that can be used to reduce aggression.
Gastrointestinal Tract Anatomy
The gastrointestinal tract (GI tract) is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The GI tract performs the essential functions of digestion, absorption, and elimination.
The mouth is the beginning of the GI tract. The food we eat passes from the mouth, down the esophagus, and into the stomach. The stomach breaks down the food into smaller pieces and then passes it into the small intestine. The small intestine absorbs the nutrients from the food and passes them into the blood stream. The food that is not absorbed passes into the large intestine. The large intestine absorbs water from the food and passes the waste material into the rectum. The rectum stores the waste material until it is eliminated through the anus.
Upper Gastrointestinal Tract
The upper gastrointestinal tract (UGI) includes the mouth, pharynx, esophagus, stomach, and small intestine. The UGI performs the important function of digesting food. The process of digestion begins in the mouth, where food is chewed and mixed with saliva. The chewed food then passes through the pharynx and into the esophagus. The esophagus muscles contract and push the food into the stomach. The stomach muscles contract and churn the food, and then the food passes into the small intestine. The small intestine is where most of the digestion and absorption of food takes place. The small intestine is divided into the duodenum, jejunum, and ileum. The duodenum is the first part of the small intestine, and it is where the bile and pancreatic juices are secreted. The bile and pancreatic juices help to digest the food. The jejunum and ileum are the other parts of the small intestine. The ileum is the last part of the small intestine, and it is where the absorbed food is transported into the blood stream.
Lower Gastrointestinal Tract
The lower gastrointestinal tract (LGT) is the part of the digestive system that starts at the small intestine and ends at the anus. The LGT includes the rectum and the anus. The rectum is the last part of the large intestine. The anus is the opening at the end of the rectum where stool leaves the body.
The LGT is responsible for the final stages of digestion and the elimination of waste from the body. The LGT absorbs water and minerals from the stool, and muscles in the wall of the LGT push the stool forward. The stool is then eliminated through the anus.
Disorders of the Human Digestive System
There are many disorders of the human digestive system, including:
-Celiac disease: a disorder that affects the digestive system and caused by an intolerance to gluten
-Crohn’s disease: a disorder that affects the digestive system and caused by inflammation of the digestive tract
-Ulcerative colitis: a disorder that affects the digestive system and caused by inflammation of the large intestine
-Irritable bowel syndrome: a disorder that affects the digestive system and is characterized by cramps, bloating, constipation, and diarrhea
-Diverticulitis: a disorder that affects the digestive system and is caused by inflammation of the small intestine
-Gallstones: stones that form in the gallbladder, which is a small organ that sits just below the liver and helps to digest food
-Pancreatitis: a disorder that affects the digestive system and is caused by inflammation of the pancreas
-Hepatitis: a disorder that affects the liver and is caused by inflammation of the liver
Gastric Secretion
Gastric secretion is the production of gastric juice, a digestive fluid consisting of hydrochloric acid, pepsinogen, and mucus. The gastric juices are secreted by the cells of the gastric mucosa, the lining of the stomach.
The secretion of gastric juice is stimulated by the presence of food in the stomach. The hormone gastrin is released by the stomach cells in response to food and stimulates the secretion of gastric juice.
The main component of gastric juice is hydrochloric acid, which is secreted by the parietal cells in the stomach. Hydrochloric acid is a strong acid that dissolves food and helps to digest proteins.
Pepsinogen is also secreted by the parietal cells and is converted into the enzyme pepsin in the presence of hydrochloric acid. Pepsin digests proteins into peptides.
Mucus is secreted by the mucous cells in the stomach and helps to protect the stomach lining from the effects of the acid.
