lab 42 digestive system

How does the large intestine differ from the small intestine in diameter?

50% bigger. Large intestines are 3 inches in diameter. Small intestines are 1.5 inches in diameter.

pancreas

Accessory organ

descending colon

Alimentary canal

Where does the cystic duct take bile for storage?

Bile flows into the cystic duct and then is stored in the gallbladder where it is concentrated.

What part of the tooth is found above the neck?

Crown

The segments or pouches of the large intestine have what particular name?

Haustra

distal portion of the small intestine

Ileum

Where is the lesser omentum found?

It is an extension of the peritoneum that forms a double fold of tissue between the stomach and liver.

middle portion of the small intestine

Jejunum

What membrane holds the tongue to the floor of the mouth?

Lingual frenulum

Stomach acidity is the range of pH 1 to 2. How might this inhibit the growth of ingested bacteria?

Most bacteria don't grow will in acidic conditions. The low pH in the stomach acts as a microbial inhibitor and killing some out right and inhibiting other from increasing in numbers.

location of the villi

Mucosa

What are the adult teeth directly posterior to the canine teeth called?

Premolars

part of the stomach closest to the small intestine

Pyloric region

outer surface of the stomach

Serosa

cell type in the muscularis

Smooth muscle

layer adjacent to the lumen of intestine

Submucosa

Name two functions of the pancreas.

The exocrine generates pancreatic amylase. The endocrine generates insulin and glucagon.

Trace the flow of bile from the liver to duodenum, listing all the structures that come into contact with the bile on its journey.

The hepatocytes in the liver produce bile, which then flows through the left and right hepatic ducts to the common hepatic duct. Once the common hepatic duct is filled, the bile flows into the cystic duct and then into the gallbladder where it is stored. The gallbladder allows the bile to flow back into the cystic duct and then the common bile duct which empties into the duodenum.

What are the names of the salivary glands anterior to the ear?

The salivary gland located anterior to the ear is the Parotid Gland.

How does the large intestine differ from the small intestine in length?

The small intestine is actually the longer intestine, it's almost 20 feet long and is coiled within the large intestine which isn't that long at all, only about 5 feet long. Around 17 feet long.

Where do you find lacteals in the digestive tract?

Villi in the small intestine

What is semidigested food in the stomach called?

chyme

What is the layer of a tooth superficial to the dentine?

enamel