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Digestive System

Organs of

QuestionAnswer
What are the primary functions of the Digestive System? digestion and Absorption of Dietary Foodstuffs
What are the organs of the Gastrointestinal Tract? 1. Mouth; 2. Oropharynx; 3. Esophagus; 4. Stomach; 5. SMALL Intestine
What are the parts of the Mouth? Teeth, Tongue, Salivary Glands
What is the composition of the mouth? Stratified Sqamous Epithelium --> barrier to infection, protect lining of mouth
What are the tpes of teeth and their function? 20 Deciduous, 32 Permanent - oragans of Mastication
What is the composition of the Tongue and its function? Skeletal Muscle - serving in Speech, Mastication, Swallowing, Speech
What is teh Lingual Frenulum and where is it located? tissue that restrsins the Tongue - UNDER Tongue
What are the functions of the Salicary Glands? Lubrication, preliminary Carbohydrate DIGESTION --> Liquify --> enhances Taste and Swallowing
What are the 3 types of Salivary Glands? Parotid, Submandibular, Sublingual
Where is the Parotid Salivary Gland located? duct entry LATERAL to the UPPER 2nd Molars
Where are the Submandibular Salivary Glands located? ducts emerge along bothe side of the Lingual Frenulum
Where are the Sublingual Salivary Glands located? ducts open into FLOOR of Mouth
What ANS fibers innervate Salivary Glands? ALL are innervated by both Sympathetic and Parasympathetic fibers = Dualmotor Innervation
Where is the Oropharynx located? Air/Food passageway behind the Uvula
What is the function of the Uvula? SEALS Oropharynx to keep Food out - causes Snoring
What is the function of the Palatine Tonsils? to GUARD the Orophaynx from infection - located bilaterally
What is the Esophagus and where is it located? Food Conduction Tube - POSTERIOR to the Trachea
What is the composition of the Esophagus? 1st 1/3 = Skeletal Muscle (voluntary), last 2/3 = Smooth Muscle (involuntary), Stratified Squamous Epithelium
What is the function of the Esophagus? initiates Peristalsis
What is Peristalsis? Wavi Contraction along a tube - continuous from mouth --> Anus
Where is the Somach located? UPPER LEFT of Abdominal Cavity
What is the function of the Stomach? Food Storage Organ
What is the Esophageal Sphincter? the Sphincter at the ENTRANCE of the Stomach
What is the Pyloric Sphincter? the Spincter at the EXIT of the Stomach
What is the composition of the Stomach? Smooth Muscle, Simple Columnar Epithelium, Rugae, Gastric Glands
What are Rugae? internal folds of Mucosa
What is the function of the Gastric Glands? produce Gastric Juice = HCI and Enzymes for Protein Digestion
What are the subparts of the SMALL Intestine? 1. Duodenum; 2. Jejunum; 3. Ileum
What is teh function of the SMALL Intestine? site of most Digestion and Absorption
What structure of the SMALL Intestine are anchored, by what, and where? Jejunum, ileum - Mesentery - Dorsal Body Wall
Created by: kristel387