lesson 11 - digestive system

what is continuous of the esophagus

laryngopharynx

opening of the large intestine

anus

whats the muscularis externa of the digestive tract

two layers of smooth muscle

myenteric nerve plexus is located in which layer od the alimentary canal

muscularis

what mucous membrane secures the tongue to the floor of thr mouth

lingual frenulum

what does myenteric plexus do

controls GI motility (movement)

list the structures involved in swallowing

pharynx, larynx, tongue, soft palate

digestive organ that produces insulin, glucagon and hydrolytic enztmes

pancreas

what vitamin is synthisized in the large intestine

bacteria flora synthesizes vitamin k

name of small finger like projections of the mucosa in the small intestine that increases surface area for absorption

villi

function of hydrochloric acid in the stomach

activate pepsin

whats haustra

pouches fromed by taeniae in the large intestine

bile function

emulsify fats

deep folds in the mucosa and submucosa of the intestianl wall

plicae circularis

middle section of the small intestine

jejunum

common bile duct is formed by the union of what

common hepatic and cystic ducts

GI tract is called

alimentary canal

layers of the mucosa (inside)

1. epithelium - goblet cells

2. lamina proprina - MALT

3. muscularis mucosae

fucnction of submucosa (2nd layer)

2 layers inner circular and outer longitudinal - segmentation (mixing) peristalisis (movement)

function of serosa (3rd layer) and exeption

moves it back to place - esophogus has adventitia

dental formula

20 primary, 32 perminent (adult) (2I, 2C, 2M)

saliva components

slightly acidic, IgA, amylise, electrolytes

what is swallowing called

deglutination. buccle (voluntary), pharyngeal and esophogeal (involuntary)