mucus is produced by the salivary glands and the

ATI LPN

Nutrition For PN Nursing ATI

1. Mucus is produced by the salivary glands and the:

A. intestinal glands.
B. esophageal glands.
C. pineal gland.
D. islets of Langerhans.

Correct answer: A

Rationale: Mucus is produced by the salivary glands to moisten food and aid in swallowing. Additionally, the intestinal glands secrete mucus to protect the lining of the intestines. The other choices, esophageal glands, pineal gland, and islets of Langerhans, are not involved in the production of mucus in the digestive system.

2. Which of the following is a characteristic of essential fatty acids?

A. They can come from both animal and plant sources.
B. They are not manufactured by the body.
C. They are not manufactured by the body.
D. They are manufactured by the body.

Correct answer: B

Rationale: The correct answer is B: Essential fatty acids are not manufactured by the body. These fatty acids must be obtained through the diet because the body cannot synthesize them. Choice A is incorrect because essential fatty acids can come from both animal and plant sources, not just from an animal source. Choice C is the correct characteristic of essential fatty acids. Choice D is incorrect because essential fatty acids are not produced by the body.

3. How does a nursing infant receive antibodies from its mother?

A. Through anabolism and catabolism.
B. Through the absorption of antibodies.
C. Through the absorption of amino acids and synthesis of antibodies.
D. Through genetic inheritance.

Correct answer: B

Rationale: A nursing infant receives antibodies from its mother through the absorption of antibodies present in breast milk. Choice A is incorrect as anabolism and catabolism refer to metabolic processes, not the transfer of antibodies. Choice C is incorrect as the infant does not need to synthesize antibodies but directly receives them. Choice D is incorrect because while genetic inheritance plays a role in the immune system, in this case, the direct transfer of antibodies occurs through breast milk.

4. Signs of malnutrition can appear when:

A. nutrient reserves are depleted.
B. nutrient intake exceeds daily needs.
C. energy intake is restricted.
D. caloric expenditure increases.

Correct answer: A

Rationale: The correct answer is A: 'nutrient reserves are depleted.' Signs of malnutrition manifest when the body's reserves of essential nutrients are exhausted and can no longer sustain health. Choice B is incorrect because excessive nutrient intake exceeding daily needs does not lead to malnutrition but may cause other health issues. Choice C is incorrect as restricting energy intake may lead to weight loss but not necessarily malnutrition. Choice D is also incorrect as increasing caloric expenditure does not directly cause malnutrition.

5. Which lipoprotein carries fat from a meal just consumed to the liver?

A. Very low-density lipoprotein (VLDL).
B. Low-density lipoprotein (LDL).
C. Chylomicrons.
D. High-density lipoprotein (HDL).

Correct answer: C

Rationale: Chylomicrons are the lipoproteins responsible for transporting dietary fat from the intestines to various tissues, including the liver. VLDL carries lipids synthesized in the liver, LDL transports cholesterol to tissues, and HDL helps transport cholesterol away from tissues to the liver for excretion. Therefore, in the context of carrying fat from a meal just consumed to the liver, chylomicrons are the correct choice.