Module 15

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What are the major functions of the digestive system?

Breakdown and absorpyion of food

In the alimentary camel, the muscle fibers of the inner muscular coat are_________ and the fibers of the outer muscular coat are________?

Circular; longitudinal

The small intestine consist of thread section. As passes from the stomach through the small intestine, it passes through the __________, then through the ________ and the the______.

Duodenum Jejunum Ileum

The small intestine consists of three sections. As food passes from the stomach through the small intestine, it passes through the _______, then through the________ , and then the ________.

Duodenum Jejunum Ileum

True or false: the process of digestion of food begins in the stomach.

FALSE. Food actually begins digesting the moment the mouth receive the food.

Chief cells in the stomach releases an inactive enzyme, which is activated by____ in the stomach. The active form of the enzyme called ______ breaks down protein.

Hydrochloric acid; pepsin

Indicate which of the following are characteristics of the muscosa?

It contains glands that secrete mucus and digestive enzymes It carries on secretion and absorption.

The layer of the alimentary canal responsible of absorption, and for secretion of digestive enzymes, is the ?

MUCOSA

The process of breaking down large pieces of food into smaller ones without affecting the chemical composition is known as?

Mechanical digestion

The colon is composed of four parts. The order of these are?

Ascending, transverse, descending, and sigmoid colons.

Chief cells secrete an inactive digestive enzymes called___________, which is activated in the stomachs acid for ________, the active enzyme that breaks down protein.

Pepsinogen and pepsin

The wall of the alimentary canal consist of four layers. The outer most layer is the _______ what layer?

SEROSA or SEROUS

The J shape, pouch-like organ that hangs inferior to the diaphragm in the upper left portion of the abdominal cavity is the ?

STOMACH

The ________ receives food from the esophagus, mixes the food with gastric juice, initiates protein digestion, carries on limited absorption, and moves food into the small intestine.

STOMACH


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