4 Digestive System
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The digestive system has two main parts: the gastrointestinal (GI) tract and accessory organs. The GI tract includes the mouth, esophagus, stomach, small intestine, large intestine, and anus. Accessory organs include the teeth, tongue, liver, gallbladder and pancreas. Food enters the mouth where it is broken down by chewing and saliva before passing through the esophagus into the stomach for further breakdown. Digestion is completed in the small intestine where nutrients are absorbed. Undigested material then passes into the large intestine to be compacted and expelled as waste.
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◦ mouth, pharynx, esophagus,
◦ stomach, small intestine,
◦ large intestine, anus
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salivary glands, liver, gallbladder, pancreas
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From esophagus to anus, GI tract has the same basic arrangement of tissues.
There are following layers from outer surface to inward.
Serosa
Longitudinal smooth muscle
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Submucosa
Mucosa
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In the LONGITUDINAL MUSCLE LAYER, the bundles extend longitudinally down the intestinal tract.
In the CIRCULAR MUSCLE Layer, they extend around the gut.
Within each bundle, the muscle fibers are electrically connected with one another through large numbers of GAP JUNCTION .
Because of these gap junction electrical signals that initiate muscle contractions can travel readily from one fiber to the next within each bundle but more rapidly along the length of the bundle than sideways.
Each muscle layer functions as a SYNCYTIUM . That is , when an action potential is elicited anywhere within the muscle mass, it generally travels in all directions in the muscle.
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1. Ingestion or consumption of food substances.
2. Breaking them in to small particles.
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4. Secretion of necessary enzymes and other substances for digestion.
Digestive glands
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The mucose membrane lining of gastrointestinal tract is stratified squamous epithelium at the esophagus which slowly convert into simple columnar epithelium at the stomach until the anus it converts back into the stratified squamous epithelium at the lower half of the anal canal. The stratified epithelium is a wear and tear epithelium.
As it passes down from the small to large intestine, goblet cells increase because as it passes down water was absorb, goblet cells function to produce mucous.
This is just a rough idea, for better slides with more reference please PM the author at davidgqf@gmail.com.
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- The central nervous system includes the brain and spinal cord. The peripheral nervous system includes nerves and ganglia outside the brain and spinal cord.
- The autonomic nervous system controls involuntary functions and is divided into the sympathetic and parasympathetic systems.
- Sensory receptors in various parts of the body receive stimuli which are transmitted as nerve impulses along sensory neurons to the CNS. Motor neurons then transmit signals from the CNS to effector cells
Introduction to nervous system
The nervous system is divided into the central nervous system (CNS) and peripheral nervous system (PNS). The CNS contains the brain and spinal cord, which coordinate incoming and outgoing information. The PNS connects the CNS to organs and sensory receptors, carrying signals to and from the CNS. Neurons are the basic functional units and come in sensory, motor, and interneuron types that differ in their dendrite and axon structures. Sensory neurons carry signals to the CNS while motor neurons carry signals away, and interneurons connect signals within the CNS.
Nervous System
The nervous system is comprised of the central nervous system (brain and spinal cord) and peripheral nervous system (nerves connecting to organs and tissues). The central nervous system receives sensory information and coordinates motor responses through neurons that communicate via electrical and chemical signals. There are three types of neurons - sensory, motor and interneurons. The peripheral nervous system has two divisions - somatic (voluntary control) and autonomic (involuntary control like digestion).
The Nervous System (Slide Show)
The nervous system is the master controlling and communicating system of the body. It has two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord and controls sensory input, integration of information, and motor output. The PNS connects the CNS to the rest of the body through nerves and allows for voluntary control of muscles and glands as well as involuntary reflexes. The nervous system monitors both internal and external changes through sensory receptors and responds through integration and motor functions to control the body.
Nervous system notes
The document provides an overview of the nervous system, including its main functions and classifications. It describes the central nervous system (brain and spinal cord) and peripheral nervous system. It also discusses the structure and function of neurons, how impulses are transmitted, and the main regions and components of the brain and spinal cord.
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DIGESTIVE SYSTEM.pdf
The document discusses the anatomy and functions of the digestive system. It begins by outlining the main functions as ingestion, digestion, absorption of nutrients, and elimination of waste. It then describes the major organs that make up the digestive tract, including the mouth, esophagus, stomach, and small and large intestines. It provides detailed information on the layers, tissues, and cell types that compose each organ. Throughout, it emphasizes the roles and secretions of each organ in the breakdown and absorption of food.
Digestive system lecture slides.pdf
The digestive system consists of the alimentary canal and accessory organs. The alimentary canal includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. Accessory organs include the teeth, tongue, liver, gallbladder, and pancreas. Food is ingested and moves through the digestive tract, where it undergoes mechanical and chemical digestion to break nutrients into smaller molecules that can be absorbed and used by the body. Enzymes produced in glands aid in digestion at different points along the tract.
Digestive features
The digestive system prepares food for use by hundreds of millions of body cells. It uses mechanical and chemical methods to break food down into nutrient molecules that can be absorbed into the blood. Food enters the mouth and is broken down by chewing and mixed with saliva. It then passes into the stomach through the esophagus. The stomach contains acid and enzymes that continue breaking down the food. From the stomach, food enters the small intestine where most absorption occurs before the remaining waste is eliminated.
DIGESTIVE SYSTEM
Elaborate an anatomy and physiology of the digestive organ and accessory digestive organs and disorders.
Digestive System
Human Digestive System how to work & their Process are studied in this PPT. Anatomy of G.I track their function, parts, Stomach anatomy and process of digestion are explain in detailed.
HAP 4 SEMESTER 2 BPHARMACY AS PER PCI SYLLABUS
The document summarizes key aspects of the digestive system, including its main organs and functions. It describes the two main groups that make up the digestive system - the gastrointestinal tract and accessory digestive organs. It then provides details on the structure and functions of key organs like the stomach, small intestine, large intestine, salivary glands, and their role in digestion.
digestive system of anatomypowerpoint pres
The digestive system contains both the alimentary canal (gastrointestinal tract) and accessory organs. The alimentary canal includes the mouth, esophagus, stomach, and small and large intestines. Accessory organs that aid digestion include the teeth, tongue, liver, gallbladder and pancreas. The digestive tract walls are composed of four main layers - mucosa, submucosa, muscularis externa, and serosa. Digestion involves both mechanical and chemical breakdown of food, with enzymes from the mouth, stomach, pancreas and small intestine facilitating the process.
Sistem pencernaan
The document discusses the anatomy, histology, functions, and processes of the digestive system. It describes the main organs of the digestive tract including the oral cavity, esophagus, stomach, small intestine, liver, pancreas, and large intestine. It explains the key roles of these organs in digesting food, absorbing nutrients, and eliminating waste through physical and chemical breakdown processes, gland secretions, and coordinated movement throughout the system.
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The document provides an overview of the histology of the gastrointestinal tract. It describes the five main phases of GIT function and the major organs that make up the digestive system, including the oral cavity, esophagus, stomach, small and large intestines, rectum, and anus. For each organ, it discusses the epithelial lining, layers (mucosa, submucosa, muscularis externa), and cell types (e.g. gastric glands in stomach). It also describes the tongue papillae, esophagus layers, stomach regions and glands, and small intestine function. In summary, it provides a detailed histological analysis of the gastrointestinal tract.
Digestive system
The digestive system consists of the gastrointestinal tract and accessory organs. The gastrointestinal tract includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum and anus. Food moves through the tract where it is broken down mechanically and chemically. Digestive juices and enzymes from the accessory organs like the liver, pancreas and salivary glands aid in digestion. The small intestine completes digestion and absorbs nutrients into the bloodstream while the large intestine processes waste for excretion.
DIGESTIVE SYSTEM -PHYSIOLOGY
The digestive system breaks down food into nutrients that can be absorbed and used by the body. It has four main functions - ingestion, digestion, absorption, and egestion.
The gastrointestinal tract has four layers - mucosa, submucosa, muscularis and serosa. The mucosa contains the epithelial lining, lamina propria and muscularis mucosa.
The mouth's functions include ingestion, chewing, tasting and swallowing food. Saliva contains amylase and is produced by the parotid, submandibular and sublingual glands. Swallowing has three stages - oral, pharyngeal and esophageal. Peristalsis propels food through the
GIT MW.pptx
The document discusses disorders of the gastrointestinal system, beginning with a review of the anatomy and physiology of the GI tract. It describes the components and functions of the upper and lower GI tract. Key diagnostic tests are outlined including barium swallow, upper endoscopy, and colonoscopy. The disorder Achalasia is summarized, noting its causes, symptoms of dysphagia and chest pain, and treatments including medications to decrease LES pressure and forceful dilation.
Anatomy & Physiology of GIT
Anatomy & Physiology of GIT: It covers Organs of the Digestive system, Structure of the Alimentary canal, Mouth, Salivary glands, Pharynx, Oesophagus, Stomach, Small intestine, Large intestine, Rectum & Anal canal, Pancreas, Liver, Biliary tract
Digestive System
The document summarizes the anatomy and physiology of the human digestive system. It describes the main organs involved in digestion, including the mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas and gallbladder. It explains the basic processes of ingestion, digestion, absorption and elimination that the digestive system carries out to break down food and extract nutrients.
Chap25 ppt revised for online
The document describes the structure and functions of the digestive system, including the organs of the digestive tract from mouth to anus and accessory organs. It details the layers of the digestive tract wall and the roles of the different cell types in the stomach lining. The stomach secretes hydrochloric acid and enzymes to begin breaking down food through both mechanical and chemical digestion.
Gastrointestinal System Disorders
The document provides information on the gastrointestinal system and gastrointestinal disorders. It describes the structures and functions of the upper and lower gastrointestinal tract, including the mouth, esophagus, stomach, small intestine, and large intestine. It discusses digestion, absorption of nutrients, and the role of the gastrointestinal tract in fluid and electrolyte balance. Common gastrointestinal disorders mentioned include dysphagia, esophageal disorders, and various conditions affecting the stomach and intestines.
Gastrointestinal Tract (GIT)//DIGESTIVE SYSTEM
The digestive tract or gastrointestinal tract ( GIT) is composed of mouth , pharynx, oesophagus, stomach , small intestine and large intestine .
This GIT will helps in digestion of food and absorption of needed nutrients into our body .
gastrointestinaltractgit-220817021937-805e8aa3.pdf
The document provides an overview of the digestive system, including its main functions and components. The digestive system consists of the alimentary canal and digestive glands. The alimentary canal runs from the mouth to the anus and includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. Each part has specific structures and functions related to ingestion, digestion, absorption, and elimination of food.
A complete guide to the Human Digestive System
The digestive system consists of the gastrointestinal tract and accessory organs. The gastrointestinal tract is made up of the oral cavity, esophagus, stomach, small intestine, large intestine, rectum, and anus. Accessory organs include the teeth, tongue, salivary glands, liver, gallbladder and pancreas. The gastrointestinal tract works with these accessory organs to break down food into smaller molecules that can be absorbed and used by the body.
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