most nutrient digestion and absorption occurs in the

ATI RN

ATI Nutrition Proctored Exam 2023 Test Bank

1. Where does most nutrient digestion and absorption occur?

A. Large intestine
B. Small intestine
C. Stomach
D. Mouth

Correct answer: B

Rationale: The small intestine is the correct answer. It is the primary site for nutrient digestion and absorption in the digestive system. The small intestine plays a crucial role in breaking down carbohydrates, proteins, and fats into forms that can be absorbed by the body. While the large intestine absorbs water and electrolytes, the majority of nutrient absorption occurs in the small intestine. The stomach primarily functions in the initial digestion of proteins, and the mouth begins the mechanical breakdown of food through chewing.

2. What are the contraindications for using MI Paste?

A. Children under six
B. Individuals with a milk casein allergy
C. Pregnant women
D. Both A and B

Correct answer: D

Rationale: MI Paste is contraindicated in children under six and in individuals with a milk casein allergy. The reason is that MI Paste contains casein phosphopeptide, which is derived from milk. Therefore, it may cause allergic reactions in those who are sensitive to milk proteins. Pregnant women (Choice C) are not contraindicated for using MI Paste unless they have a known allergy to milk casein. Hence, the correct answer is 'D: Both A and B'.

3. Which symptoms are associated with cancer of the colon?

A. constipation, ascites, and mucus in the stool
B. diarrhea, heartburn, and eructation
C. blood in the stools, anemia, and 'pencil-shaped' stools
D. anorexia, hematemesis, and increased peristalsis

Correct answer: C

Rationale: The correct symptoms associated with cancer of the colon are blood in the stools, anemia, and 'pencil-shaped' stools. These symptoms are classic indicators of colorectal cancer. Choices A, B, and D do not typically present in colorectal cancer. Constipation, ascites, and mucus in the stool are more commonly associated with other gastrointestinal conditions. Diarrhea, heartburn, and eructation are not typical symptoms of colon cancer. Anorexia, hematemesis, and increased peristalsis are more indicative of other gastrointestinal issues and not specific to colon cancer.

4. Churns chyme and has an environment of pH2; holds 4-6 cups of food:

A. stomach
B. pancreas
C. large intestine
D. small intestine

Correct answer: A

Rationale: The stomach churns food into chyme and has a highly acidic environment (pH 2) to aid in the digestion of proteins and other nutrients.

5. When counseling a teenager about fast food, a dental hygienist could correctly cite which of the following facts, with one exception. Which is the exception?

A. Most fast food menus lack a rich source of vitamin A
B. Consumer demands have driven the establishment of salads and other healthy menu items
C. Shortages of biotin, folate, pantothenic acid, and copper are reported in fast foods
D. Studies reveal that protein is lacking in most menu items

Correct answer: D

Rationale: The correct answer is 'D'. Fast food is generally not deficient in protein since it often contains meat, a significant source of protein. On the other hand, fast food is known to lack essential nutrients like Vitamin A and certain minerals, as mentioned in choices 'A' and 'C'. Choice 'B' is also accurate as many fast food establishments have started offering healthier options such as salads due to customer demands. Therefore, all options are true except 'D', which makes it the exception.