Lab_38_HWanswers

Lab_38_HWanswers - Exercise 38 Homework Anatomy of...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Exercise 38 Homework Anatomy of Digestive System 1. What are the parts of the gastrointestinal tract? Also called digestive tract or alimentary canal Continuous tube in ventral cavity, extend form mouth to the anus. Includes: i. Mouth, Pharynx ii. Esophagus iii. Stomach iv. Small intestine v. Large intestine vi. Anus 2. What is the function of the digestive system? Ingestion of food and liquid, a voluntary and active process Secretion of water, acid, buffers, enzymes, and salts by GI tract and glands Motility mix and move materials along the tract Digestion Absorption Defecation: Elimination of waste 3. Name the accessory organs/structures . Teeth Tongue Salivary glands Liver Gall bladder Pancreas 4. What is the definition of digestion? To break down food to smaller molecules i. Mechanical: grinding (teeth), churning (stomach) ii. Chemical: enzymes 5. What is the definition of absorption? To absorb nutrients, ions, water, vitamins into the cells and then to the body Can be active or passive processes 6. Name the 4 tunics of the alimentary canal Mucosa Submucosa Muscularis externa Serosa 7. What is the function of the mucosa Protection, absorption, secretion 8. The mucosa consist of 3 layers, mention them and describe each layer: Epithelium 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
i. Nonkeratinized stratified squamous epithelium in the mouth, pharynx, esophagus, anal canal. Has a protective function and lubrication ii. Simple columnar in the stomach, small and large intestine secretion and absorption contain goblet cells Enteroendocrine cells located among epithelium and secret hormones Lamina propria i. Areolar connective tissue that supports and binds epithelium to muscularis mucosae ii. Contains blood vessels, lymphatic vessels, lymphatic tissue, and sensory nerve
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/29/2011 for the course BIO 233 taught by Professor Salti during the Spring '11 term at Portland CC.

Page1 / 4

Lab_38_HWanswers - Exercise 38 Homework Anatomy of...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online