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Anatomy and Physiology

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Submitted By mblossom67
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GVT Task 2
A. 1. Labels of digestive organs
A. 2. The function of digestive organs

The mouth is the beginning of the digestive process. As food enters the mouth, the teeth begin breaking down the food and mixing with the saliva. The mouth functions in the beginning of the digestive process. The teeth begins to breakdown the food particles and mixes with the saliva. From the mixture of food and saliva travels to the stomach. The stomach begins to secrete gastric enzymes that combine with the food. As the food continues through the duodenum

The stomach receives the food particles and begin to mix with the gastric juices to further breakdown the food.

The liver

The gallbladder

Duodenum

Jejenum

Ascending Colon

A. 3. Summarization of mechanical and chemical digestion
Mechanical Digestion - Food is crushed and liquefied by the teeth, tongue, and peristaltic contractions (waves of involuntary muscle contraction) of the stomach and small intestine. This creates a greater surface area for the digestive enzymes to work upon.
Chemical Digestion - Many glandular structures, dispersed throughout the body, are involved in breaking food into simple molecules that can be absorbed. In the mouth, the salivary glands produce saliva, which both lubricates food and begins the process of starch digestion. Saliva contains salivary amylase (ptyalin), an enzyme that digests starch to maltose (a disaccharide). As food leaves the mouth, the esophagus conducts it to the stomach via the cardiac sphincter by means of peristaltic waves of smooth muscle contraction.

A. 4. Examples of enzymes that digest carbohydrates, proteins, and lipids

Amylase break down carbohydrates. Sucrase break down carbohydrates. Mycozyme break down carbohydrates. Protease break down proteins. Pepsin break down proteins. Trypsin proteins. Duodenal enterokinase...

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