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BIOL 1107 Study Guide - Quiz Guide: Lipase, Enzyme, Submucosa

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1144220907
28 Sep 2022
School
UConn
Department
Biology
Course
BIOL 1107
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Document Summary

Mammals have a mono gastric digestive system with a single chambered stomach. Birds have a digestive system that includes a gizzard where the food can be crushed into smaller pieces before digestion. Name and define the 4 layers of the mammalian digestive tract. Food first enters the mouth, then goes into the esophagus, then the stomach, small intestine, large intestine, and to the anus as waste product. Pepsinogen is the precursor of pepsin that is released to break down proteins in food during digestion. The stomach has a low level of h. The exocrine part produces mainly digestive enzymes and helps in digestion. The endocrine part is responsible for the regulation of carbohydrate metabolism. Name 2 digestive aids - non enzyme substances that help break down food and move it through the digestive tract. Compare and contrast the structure and functions of the small vs large intestines.

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Related Questions

1. Which organ is responsible for balancing the amount ofglucose floating around in the blood? (it stores excess glucosewhen there is too much and releases glucose into the bloodstreamwhen there isn't enough)

Select one:

a. liver

b. pancreas

c. spleen

d. stomach

2. The gastrointstinal tract has 4 basic layers. Which layer isthe one that comes in contact with the food that you eat?

Select one:

a. serosa

b. submucosa

c. muscularis

d. mucosa

3. Which digestive organ contains 3 layers of muscle tissue inthe muscularis?

Select one:

a. esophagus

b. large intestine

c. stomach

d. anus

4.

The esophagus is the first organ in the digestive tract thatsecretes digestive enzymes to begin the chemical (molecular)breakdown of food.

Select one:

True

False

5.

Gastric ulcers are often caused by bacterial infection.

Select one:

True

False

6.

Lactose intolerance causes gas, bloating and stomach achesbecause undigested sugar molecules, called lactose, end up gettingdigested by bacteria in the intestines. When they digest it, theyproduce lots of gases.

Select one:

True

False

7. The lower esophageal sphincter prevents food in the stomachfrom backing up into the esophagus.

Since the esophagus is not equipped to handle the harsh acids inthe stomach, when food (mixed with stomach acids) does back up intothe esophagus, you get symptoms such as heart burn. This is calledgastroesophageal reflux (or "reflux").

When reflux is left untreated for many years, the person becomesa trisk for esophageal cancer. This is because the esophagus gets"burned" by the acids over and over again which can eventuallytrigger the development of cancerous cells.

Select one:

True

False

8.

Peristalsis is defined as the rhythmic contractions of thedigestive system that pushes food along the digestive tract.

Select one:

True

False

Explain how the structure and function are linked together for the following organs of the digestive system:

1) Mouth

2) Oesophagus

3) Stomach

4) Small intestine

5)Large intestine

6)Rectum

7) Anuss

The GI track is composed of many organs and structures that store, digest, move and expel food. Each segment has a specific functions, structural modifications have been made to the digestive system. Identify at least two organs in the digestive system which have been modified- identify the organ, the modification and the function performed. What do you think the impact on digestion and the body would be if either the stomach. small intestine or large intestine had to be fully or partially removed?