explain the part of the GIT track in digestive system
Question
explain the part of the GIT track in digestive system
Solution
The GIT (Gastrointestinal Tract) is a major part of the digestive system. It is a continuous tube that extends from the mouth to the anus through which food and waste material travel. Here's a step-by-step explanation of the parts of the GIT track in the digestive system:
-
Mouth: Digestion begins in the mouth. Here, the process of chewing starts to break down food into smaller pieces. Saliva, which contains enzymes, is mixed with the food to begin the process of digestion.
-
Esophagus: This is a long tube that connects the throat to the stomach. The muscles of the esophagus contract to push food down into the stomach.
-
Stomach: The stomach is a muscular organ that further breaks down food through a process called churning. In addition, the stomach produces gastric juices which contain enzymes and hydrochloric acid to break down proteins and kill bacteria.
-
Small Intestine: This is where most of the digestion and absorption of nutrients takes place. The small intestine is divided into three parts: the duodenum, jejunum, and ileum. Each part has a specific role in digestion and absorption.
-
Large Intestine: Also known as the colon, the large intestine absorbs water and electrolytes from the remaining indigestible food matter. It also processes waste to be removed from the body.
-
Rectum: The rectum is the final section of the large intestine. It stores feces until it can be expelled from the body.
-
Anus: The anus is the final part of the GIT. It is an opening at the end of the rectum through which waste is expelled from the body.
Each part of the GIT has a unique role in the process of digestion, from the initial intake and breakdown of food to the expulsion of waste.
Similar Questions
II. Numerate functions of GIT track.. in digestive system
III. Explain chemical and mechanical digestion of GIT track
explain parts of GIT track.
first part of the digestive tract
Passage 2 (Questions 6 - 10)The human digestive tract is fundamentally a long tube running through the body, with dedicated sections that are capable of digesting material put in at the proximal end, extracting any useful components from it, then expelling the waste products at the distal end.The small intestine is the site where most chemical digestion is carried out, and where virtually all the absorption of useful materials occurs. The intestines also have a smooth muscle wall with two layers of muscle, which enables the generation of rhythmic contractions that force products of digestion through the intestine. To allow for absorption and secretion, specialized zones known as macula communicans exist between the muscle cells. These directly connect the cytoplasm of two cells, which allows various molecules and ions to pass freely between them.In the large intestine, these connections allow for the movement of ions and fluids. For example, if waste is too solid, it cannot move fluidly and can result in blockage. To prevent this, Cl- ions can be secreted into the lumen. Cations and water will follow the chloride into the lumen by passing through intercellular spaces. This method of transport contrasts typical transcellular transport, where substances travel through the cell membrane.Diseases of the intestines are often due to chronic inflammation, which can arise from imbalances in the regulation of fluids and solute movement. Elevated levels of enzymes like thymidine kinase are often used to predict the risk of colon cancer. Question 10The muscle of the dual-layered system described in the passage is: A.striated.B.multinucleated.C.regulated by the parasympathetic nervous system.D.innervated by the somatic nervous system.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.