Digestive system Practical 2

Structure and function of esophagus

long muscular tube that moves food into the stomach

Structure and function of stomach

 a J shaped organ that digests/breaks down food

Structure and function of small intestine

 bundle of tubes that carries the chyme from the stomach to the

large intestine. Made up of three parts: duodenum, jejunum, and ileum

Structure and function of large intestine

bundle of tubes that takes the last bits of the digested food and absorbs any water left over in it to make a hard stool. Made up of the: ascending colon, transverse colon, descending colon, sigmoid colon, and the rectum

Structure and function of pancreas

The pancreas is a gun shaped organ that creates insulin to help break

down food

Structure and function of Liver

Produces bile that is transported to the gallbladder, where it is stored and

released into the GI system to help digest fats

Explain where in the body are lactase and lipase enzymes are produced and where they function

- Lactase is produced in the small intestine and its function is to help digest

lactose in the small intestine

- Lipase is produced in the pancreas, mouth, and stomach and its function

is to break down fats

Explain how the product of lactase and lipase was detected in each experiment

- Lactase is measured by looking at how high the glucose concentration is,

the higher the glucose concentration, the more lactase

- Lipase was detected based on the discoloration of the pancreatin

mixture

Explain the function of bile and its role in emulsification

Bile helps dilute and buffer acids in chyme as well as emulsifies lipids to aid the action of pancreatic lipase

What is the name of this organ?

Esophagus

What is labeled A on this organ

Stratified squamous

What is labeled B on this organ

Mucosa

What is labeled C on this organ

Submucosa

What is labeled D and E on this organ

Muscularis externa

What is labeled F on this organ

smooth muscle

What is labeled G on this organ

Adventitia

What is the name of this organ labeled A

Stomach

What is labeled B

Mucosa

What is labeled C

Submucosa

What is labeled D and E

Muscularis externa

What is labeled F

Longitudinal muscle of muscularis externa

What is the name of this organ labeled A

small intestine

What is labeled B

Villi

what is labeled C

Mucosa

What is labeled D

intestinal crypts

What is labeled E

Submucosa

What is labeled F

Muscularis externa

What is labeled G

Serosa

What is the name of this organ

large intestine

What is labeled A

Simple squamous

What is labeled B

Intestinal crypts

What is labeled C

Goblet cells

What is labeled D

Muscularis mucosae

What is labeled E

Submucosa

What is labeled F

Muscularis externa

What is the name of this organ?

Liver

what is labeled A

liver sinusoids

what is labeled B

Liver lobule

What is labeled C

Central vein

What is labeled D

Portal venule