begins carb digestion in the mouth

ATI RN

ATI Nutrition Practice A

1. Begins carb digestion in the mouth:

A. pepsin
B. salivary amylase
C. CCK
D. secretin

Correct answer: B

Rationale: Salivary amylase is the enzyme that begins the digestion of carbohydrates in the mouth by breaking down starches into simpler sugars.

2. Which of the following is a poor food source of iron?

A. Dried fruits
B. Cheese
C. Clams
D. Legumes

Correct answer: B

Rationale: Iron is an essential nutrient for the body, and while it can be found in many different types of foods, the amounts can vary significantly. Cheese, while a good source of other nutrients like calcium and protein, is not a particularly rich source of iron. On the other hand, clams, legumes, and dried fruits are known to contain higher levels of iron. Therefore, among the provided choices, cheese is considered a poor source of iron. It's important to note that a balanced diet should include a variety of foods to ensure the intake of all necessary nutrients.

3. The purpose of chest percussion and vibration is to loosen secretions in the lungs. The difference between the procedures is:

A. Percussion uses only one hand, while vibration uses both hands
B. Percussion delivers cushioned blows to the chest with cupped palms, while vibration gently shakes secretions loose
C. In both percussion and vibration, the hands are not on top of each other, and hand action is not in tune with the client's breath
D. Percussion slaps the chest to loosen secretions, while vibration shakes the secretions along with the inhalation

Correct answer: D

Rationale: Chest percussion involves the use of rhythmic tapping to dislodge mucus from the lungs, facilitating its movement toward the larger airways where it can be expelled. This technique is particularly important in conditions where mucus retention is a significant risk factor for infection. The key difference between chest percussion and vibration is that percussion involves slapping the chest to loosen secretions, while vibration involves shaking the secretions along with the inhalation, aiding in moving the loosened secretions upwards for easier removal. Choices A, B, and C do not accurately describe the main difference between chest percussion and vibration, making them incorrect.

4. To raise HDL levels, what is Mrs. Smith advised to do?

A. quit smoking
B. increase dietary sodium
C. take iron supplements
D. avoid dairy products

Correct answer: A

Rationale: The correct answer is A: quit smoking. Smoking lowers HDL levels, so quitting smoking is crucial to raising HDL levels. Increasing dietary sodium (choice B) is not linked to raising HDL levels and can have negative effects on cardiovascular health. Taking iron supplements (choice C) is not directly related to increasing HDL levels. Avoiding dairy products (choice D) is not necessary to raise HDL levels; in fact, some dairy products like low-fat options can be part of a heart-healthy diet.