major processes involved in gastrointestinal activity. Ingestion which takes in food‚ propulsion which contains peristalsis(alternates the contracting and relaxation) and segmentation(movement of food back and fourth across an organ mixing with the digestive juices)‚mechanical digestion(breaks food into smaller peices)‚chemical digestion(breakdown large molecules into their building blocks; occurs in the mouth‚ stomach‚ & small intestines)‚absorption(transport of nutrients from the blood or lymph)‚ and
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valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food. The lining of the stomach secretes hydrochloric acids and enzymes that break down the food so that it can continue on its journey through the digestive system. As it secretes acid and enzymes‚ the stomach muscles contract in a process called peristalsis to mix the food with the acid and enzymes. The acid also works to kill harmful microbes that may have made their way into the body along with food
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membrane. The alimentary canal walls have four basic layers or tunics. These are the mucosa‚ the submucosa‚ the muscularis externa‚ and either a serosa or adventitia. Each of these layers has a predominant tissue type and a specific function in the digestive process. The mucosa is the wet epithelial membrane abutting the alimentary canal lumen. The major functions of the mucosa are secretion‚ absorption of digested foodstuffs‚ and protection. The submucosa’s major function is nutrition and protection
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How does food move through the body? Food passes through the GI tract‚ and mixes with digestive juices. Eventually‚ it causes large molecules of food to break down into smaller molecules. Then‚ the body absorbs the smaller molecules through the walls of the small intestine into the bloodstream The bloodstream then delivers the small molecules to the rest of the body. After this‚ the food continues into the large intestine‚ and out your body. What happens during the chemical digestion in the
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and I will remember this because it’s smaller than the stomach and it is above the transverse colon. Transverse colon: Located around the stomach and it is very close to the liver. I will remember where this is located because it is the biggest digestive part that is on the picture. Descending colon: It is located on the left side of the body‚ after the transverse colon and I will remember this because it is right underneath the transverse colon. Rectum: The rectum is located right above the anal
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Ham and Cheese Sandwich By Jenny Hi‚ I am a Cheese and Ham sandwich. I have just been made and I am crispy and hot‚ I am siting on a plate‚ I am not sure what I am meant to do but it looks like the human does. Before I can even think about it I have been grabbed and heading towards the humans mouth. "Oh no I am getting eaten". Digestion has began‚ I am now getting chewed and mushed by big white teeth‚ I am also getting covered in Silvia it’s clear and very gooey the enzymes are attacking breaking
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the Digestive‚ Respiratory‚ Circulatory‚ and Nervous Systems Introduction: Bones are what our skeletal systems are made up of. There are 206 bones in the human body of the adult skeleton. The adult skeleton is broken up in two divisions: the axial skeleton‚ and the appendicular skeleton. The axil skeleton is made up of 80 bones‚ and the appendicular skeleton is made up of 126 bones. As for the different systems of the body‚ we dissected a fetal pig in groups and indicated each system as we
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Lifestyle or Medication Paper 1 Lifestyle or Medication Paper Amanda Bonnett HCA/240 7/14/2013 Nicole Vick Lifestyle or Medication Paper
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Checkpoint Chapter 23 1. Give the name and function of each of the four layers if the GI tract. A. mucosa; inner surface for the secretion of digestive end products. B. submucosa: site of glands‚ blood vessels‚ lymph vessels and nerve plexuses. C. muscularis: circular and longitudinal muscles for propulsion and mixing. D. serosa: serous membrane to reduce friction with movement. 2. Where along the GI tract is the muscularis composed of skeletal tissue? Is control of this skeletal muscle‚ voluntary
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Digestive and Respiratory System Worksheet Name: Before answering the questions below‚ log in to ADAM and view the clinical animations for Peristalsis and Gas Exchange. Remember‚ you may use our text‚ our discussions‚ and the internet to write your answers‚ but be sure to write your answers in your own words and to use correct citations where appropriate! Cutting and Pasting your responses will result in a Zero for this assignment! 1. Trace the path of an oxygen molecule from the
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