Question

In: Biology

Know the order of the digestive tract from the mouth to the anus: What organ does...

Know the order of the digestive tract from the mouth to the anus:

What organ does the pancreas deliver enzymes to:

The function of hydrochloric acid in the digestive system is

What are the following

Haustra
Peyers patches
Rugae
Villi

What are the functions of the large intestines?

Where is gastrin produce and what cells produce it:

Solutions

Expert Solution

Know the order of the digestive tract from the mouth to the anus:

Mouth.

Esophagus.

Stomach.

The small intestine.

Colon (large intestine)

Rectum.

The pancreas produces pancreatic juice, which delivers to the duodenum.

The role of hydrochloric acid is to sterilize the food and it can prevent the harmful bacteria from entering the GI tract. HCL is responsible to trigger the release of enzymes such as pepsin which are crucial for the digestion of protein.

The haustra of the colon are the small pouches caused by sacculation (sac formation), which is responsible to provide the colon its segmented appearance.

Peyer's patches are the small masses of lymphatic tissue, and they are found throughout the ileum region of the small intestine. They are also known as aggregated lymphoid nodules.

Rugae refer to a series of ridges produced by the folding of the wall of an organ. Most commonly this is applied to the internal surface of the stomach (gastric rugae).

Villi are the structure found in the small intestine, which are specialised for absorption. They have a thin wall and a large surface area so that they are more efficient for absorption.

The role of the large intestine is to absorb water from the remaining indigestible food matter and transmit the useless waste material from the body.

Gastrin is a hormone that is produced by 'G' cells of the duodenum and in the Pyloric antrum of the stomach.


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