Flashcards in Digestive Organs Deck (53):
What does the oral cavity/buccal cavity contain?
Mouth, lips and cheeks, palate , Tongue, salivary gland's, teeth
Where is the lingual frenulum located in the mouth?
The floor of the mouth under the tongue
I muscular tube that is about 10 inches in link that connects the mouth/pharynx to the stomach
This helps prevent backflow of stomach acid into Esophagus
Lower Esophageal sphincter
This is a muscular sac that stores and primarily digest food
Food is broken down into a substance called what
The stomach is composed of what for layers?
What does the crisscross pattern on the inside of the stomach do for food?
It allows the stomach to contract and grind as it processes food
This helps the stomach expand when the stomach is full
How big is an adult empty stomach and how big is it after eating?
Empty stomach – 50 mL
Full stomach -1.5 mL
The gastric glands of the stomach produce gastric juices that are composed of what for different types of cells?
Mucous neck cells
These cells secrete mucus which protects the stomach lining and keeps stomach from digesting itself
These cells secrete hydrochloric acid and absorbs vitamin B 12 it also helps kill microbes and swallowed food
These cells secrete digestive enzymes such as Pepsinogen
These cells secrete a hormone that increases appetite and helps digestive function
The gastric juices of the stomach is controlled by what?
Stimuli in the brain, stomach and small intestine
The gastric secretion of the stomach consists of what three phases?
What are the accessory organs?
Liver gallbladder and pancreas
The liver is how many pounds?
3 to 4 pounds
What is the role of the liver within the body?
Detoxification of the blood, intake of protein, creation of hormones and molecules
This produces bile
What stores bile?
What is bile?
It is a yellowish green fluid that contains salt and cholesterol
What is the function of bile?
Make into lipids/fats
This delivers oxygenated Blood from the aorta to the liver
Carries oxygen blood from the digestive organs and spleen to the liver
This organ secretes insulin/Glucagon
The Pancrease creates and secretes what pancreatic juices?
Electrolytes - bicarbonate ions
This pancreatic juice assist in chemical digestion in the small intestine
Three types of digestive enzymes?
Bicarbonate ions do what?
Help neutralize the pH of the chyme
These cells secrete digestive enzymes
The enzymes help break down lipids, proteins, and carbohydrates
Epithelial cells and pancreatic ducts secrete what?
Secrete sodium bicarbonate
What does bile reach the gallbladder?
Through a series of ducts (right and left hepatic ducts)
Bile then goes down the common hepatic duct and that gen down the common bile duct then backs up into the what?
Cystic duct and then Into the gallbladder
This controls the flow of bile and pancreatic juices into the duodenum
WHat is the duodenum ?
What enters it?
The first 10inches of the small Intestine
Bile and pancreatic juices enter here
Allows for completion of chemical digestion and most all nutrient absorption
Small Intestine consists of how many layers ?
About 8 ft in length
Suspended by the mesentery
1to 4 ft in length
Joins the large intestine
What are three features in the small intestine to increase the mucosal surface area
Circular folds -folds of mucosa
Villi -finger like extensions
Microvilli -on the villi
Intestinal lining contains these
It slows the progress of chime and increases its contact with the mucosa
Pores at the basis of the villi contain goblet cells that secrete mucus that helps the passage of food
This is around the small intestine
It absorbs remaining water with in the indigestible materials
Stores indigestible food for a brief time
Illuminates indigestible food as feces
How many feet is the large intestine in length?
This passes below the liver, stomach, and spleen
The large intestine begins in the blind pouch called what?
This part of the colon extends up toward the liver
This part of the colon extends down Ward along the left side of the abdominal cavity
As part of the colon forms an S shape down the rectum
This is the last 7 to 8 inches of the intestine