Concept explainers
To examine: Whether the statement “The GI tract is essentially a long tube”, is true or false.
Introduction: Most animals consume large and complex foods. Large food particles are broken down into smaller monomers in such a form that can be circulated to every cell throughout the body. These functions are carried out by a set of specialized structure present in an organism called as
Answer to Problem 1TF
Correct answer: The statement is true.
Explanation of Solution
The gastrointestinal tract, also known as digestive tract or GI tract is a long, muscular tube that starts from the mouth and ends at the anus. It helps to digest food by the muscle movements, along with the release of hormones and enzymes. The GI tract includes mouth, esophagus, stomach, and intestines.
Hence, the statement is true.
Want to see more full solutions like this?
- Define peristalsis, and list the regions of the GI tract where it occurs. Be sure to mention segmentation in your answer.arrow_forwardThe bile from the liver is delivered to the _______. a. stomach b. liver c. small intestine d. colonarrow_forwardFigure 34.11 Which of the following statements about the digestive system is false? Chyme is a mixture of food and digestive juices that is produced in the stomach. Food enters the large intestine before the small intestine. In the small intestine, chyme mixes with bile, which emulsifies fats. The stomach is separated from the small intestine by the pylloric sphincter.arrow_forward
- Figure 34.19 Which of the following statements about digestive processes is true? Amylase, maltaseT and lactase in the mouth digest carbohydrates. Trypsin and lipase in the stomach digest protein. Bile emulsifies lipids in the small intestine. No food is absorbed until the small intestine.arrow_forwardList the organs and accessory organs of the digestive system. On a separate piece of paper, list the main functions of each organ.arrow_forwardFigure 16.7 Which of the following statements about the digestive system is false? a. Chyme is a mixture of food and digestive juices that is produced in the stomach. b. Food enters the large intestine before the small intestine. c. In the small intestine, chyme mixes with bile, which emulsifies fats. d. The stomach is separated from the small intestine by the pyloric sphincter.arrow_forward
- You have just eaten a sausage and egg sandwich for breakfast. Explain the chemical changes that occur in the sandwich as it passes through the parts of the GI tract. Be sure to name all enzymes or secretions involved and their source.arrow_forwardIs the stomach cell part of the upper or lower GI tract? What is its primary function in digestion and what occurs in this section of the GI tract? Be specific. 3.arrow_forwardDoes digestion in the GI tract take place extracellularly (outside the cells) or intracellularly (inside the cells)? Explain your answer.arrow_forward
- The digestive tract from the esophagus to the large intestine is made up of the same 4 basic tissue layers or tunics. 1. Mucosa (Mucous Membrane) The mucosa is the innermost layer and in the GI tract it is made of 3 sublayers: a. Epithelium b. Lamina propria c. Muscularis mucosa 2. Submucosa The submucosa in the GI tract it is made of connective tissue, blood vessels, lymphatic vessels, glands, and the submucosal nerve plexus. 3. Muscularis Externa The muscularis externa in the GI tract is made of 2-3 layers of skeletal or smooth muscle and the myenteric nerve plexus. 4. Adventitia or Serosa The outermost layer is made of connective tissue and epithelial tissue. If the digestive organ is OUTSIDE the abdominopelvic cavity or it retroperitoneal (located behind the parietal peritoneum), than the layer is called ADVENTITIA. Otherwise, the layer is called SEROSA (= visceral peritoneum) In today's lab we will examine these layers using anatomical models and microscope slides. Before you…arrow_forwardA stool sample can be used as an indicator of hydration status and abnormal gastrointestinal function. Justify this in your own words with your basic knowledge of GI tract physiology.arrow_forwardThe outermost layer of the digestive tube in the region from the lower esophagus to the distal colon is the ____.arrow_forward
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage Learning
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning