Digestive System Test Flashcards
Hepatocytes
Cells of the liver responsible for production of bile, processing of vitamins, synthesis of blood proteins, detoxification of drugs and alcohol, comprising about 60% of liver tissue.
What type of epithelium does the intestines have?
Simple columnar
Gallstones
Formed by bile salts mixed with cholesterol. Painful when stuck in ducts.
Where are carbs broken down in the digestive system?
In the mouth and duodenum with salivary amylase(carbs to sugar) and pancreatic amylase
Sublingual gland
A salivary gland that lies in the floor of the mouth on the side of the tongue
What type of epithelium does an esophagus have?
Stratified squamous
Functions of large intestine
Secretes mucus, reabsorbs water and
electrolytes, contains bacteria to aid in
digestion (intestinal flora)
Mass Movements (defecation) - removes
undigested food when colon contracts to move the material through it
The main job is water reabsorption.
Bilirubin
Red blood cell pigment
Ghrelin
Hormone in the stomach that stimulates hunger
Study Upper GI, stomach, and Epithelial tissues quizlet too
Gallbladder
A pear-shaped sac-like organ attached to the interior surface of the liver with a primary function of storing bile produced by the liver. It is connected to the duodenum by the common bile duct.
Be able to label:
- Teeth Diagram(incisors, cuspid) and Tooth Diagram(dentin, gingiva)
- Parts of Pharynx
- Stomach
- Intestines
- Liver, Pancreas, Gallbladder
- Layers of alimentary canal in cross-section
- Salivary Glands
- Types of epithelial tissue
Glucagon
The pancreatic hormone that raises your blood sugar
Bile
A molecule produced in the liver but stored in the gallbladder. It is a yellowish-green fluid that helps break down fats in the small intestine
Transverse colon
A portion of the colon that extends horizontally and crosses the upper abdominal cavity
Lacteal Function
Specialized lympathic capillary that absorbs digested lipids
Gastric rugae
Folds in the mucosa layer of the stomach that allow the stomach to stretch
Jaundice
Occurs when liver fails to clear bilirubin. Causes yellowing of the skin and eyes
Pepsinogen
Inactive form of pepsin produced by chief cells in the stomach. It is activated by HCl to digest proteins.
Where are lipids broken down in the digestive system?
Gallbladder because they give off bile salts to emulsify(break down) fats/ lipids
Liver Functions
- Production of bile
- Production of proteins
- Storage of glycogen
- Storage of vitamins (A, D, E, K,
B12, and iron) - Clears bilirubin (from dead red
blood cells) - Makes urea from amino acids
- Detoxification
Hard Palate
The top portion of the roof of the mouth
Small Intestine Main Function
Absorption of nutrients
Pancreas
An exocrine and endocrine gland. Its two primary functions are to secrete digestive enzymes and bicarbonate ions into the duodenum and produce insulin and glucagon.
Acid reflux
when stomach acid splashes back into
the esophagus, causing a burning sensation (Heartburn.)
Laparoscopy
The surgery performed when removing the gallbladder or appendix
Cecum
The first region of the large intestine, a pouch that hangs inferiorly to where the large intestine connects to the small intestine and has appendix attached
Intrinsic factor
Molecule in parietal cells in stomach; required for vitamin B12 absorption in small intestine
Common bile duct
Drains the bile from the gallbladder and liver
Which tissue would be the fastest at diffusing(absorbing and secreting)?
Simple squamous because its flat and thin
Hepatopancreatic duct
The union of the common bile duct in the liver and the pancreatic duct which opens into the duodenum of the small intestine
Secretin
Hormone in the small intestine that stimulates the pancreas to release bicarbonate-rich fluids to neutralize stomach acid.
Cholecystokinin(CCK)
The small intestine hormone that stimulates gallbladder contraction to release bile and pancreas to release enzymes
Sinusoids
where blood flows and bile is removed
Ileocecal valve
Between small intestine and cecum
Pylorus
The funnel shaped terminal end of the stomach