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Lecture

Digestive System Function: BIO-377 Systems Physiology II

In course

BIO-377: Physiology by systems

Le but est de connaitre et comprendre le fonctionnement des systèmes cardiovasculaire, urinaire, respiratoire, digestif, ainsi que du métabolisme de base et sa régulation afin de déveloper une réflection scientifique biomédicale. ...

Description

This lecture covers the motility, secretion, and absorption functions of the digestive system, including the selective absorption pathways of lipids, the electrical activity of the gastrointestinal system, the role of the myenteric and submucosal plexus, neural control, reflex control, types of gastrointestinal movements, control of gastrointestinal peristalsis, control of gastrointestinal blood flow, chewing, swallowing, and esophageal peristalsis, as well as the mixing and propulsion of food in the stomach, the role of the pyloric sphincter in gastric emptying, different contractions in the small intestine, and the function of the ileocecal valve.

Instructor

Sylvain Roy

1995: Diplôme fédéral de médecin 2000: Thèse de doctorat en médecine 2001: Diplôme fédéral de spécialiste FMH en ophtalmologie et ophtalmochirurgie 2003: Diplôme d'étude spécialisée en ingénierie biomédicale

Official source

Ontological neighbourhood

Biology

Anatomy: Topics in anatomy

Related concepts (32)

Gastrointestinal tract

The gastrointestinal tract (GI tract, digestive tract, alimentary canal) is the tract or passageway of the digestive system that leads from the mouth to the anus. The GI tract contains all the major organs of the digestive system, in humans and other animals, including the esophagus, stomach, and intestines. Food taken in through the mouth is digested to extract nutrients and absorb energy, and the waste expelled at the anus as feaces. Gastrointestinal is an adjective meaning of or pertaining to the stomach and intestines.

Human digestive system

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three stages: the cephalic phase, the gastric phase, and the intestinal phase. The first stage, the cephalic phase of digestion, begins with secretions from gastric glands in response to the sight and smell of food.

Enteric nervous system

The enteric nervous system (ENS) or intrinsic nervous system is one of the main divisions of the autonomic nervous system (ANS) and consists of a mesh-like system of neurons that governs the function of the gastrointestinal tract. It is capable of acting independently of the sympathetic and parasympathetic nervous systems, although it may be influenced by them. The ENS is nicknamed the "second brain". It is derived from neural crest cells.

Digestion

Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes.

Peristalsis

Peristalsis (ˌpɛrɪˈstælsɪs , -ˈstɔːl- ) is a type of intestinal motility, characterized by radially symmetrical contraction and relaxation of muscles that propagate in a wave down a tube, in an anterograde direction. Peristalsis is progression of coordinated contraction of involuntary circular muscles, which is preceded by a simultaneous contraction of the longitudinal muscle and relaxation of the circular muscle in the lining of the gut.

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Digestive System Function: Physiology by Systems

Explores the functions of the digestive system, including motility, secretion, absorption, and neural control.

Digestive System Function: Physiology by Systems

Explores the function of the digestive system, covering colon movements, fluid balance, acid production, secretions, and regulation of digestive processes.

Structure of the Digestive System

Explores the layers and regions of the digestive system, emphasizing the stomach's cell types and acid production regulation.

Digestive System Physiology: Structure and Function

Explores the anatomy and function of the digestive system, emphasizing stomach glands, liver structure, and nutrient digestion.

Physiology II: Systems Physiology Q&A Session