Question | Answer |
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 |