equalization of solute concentration of intracellular fluids icfs and extracellular fluids ecfs is accomplished by

ATI RN

ATI Nutrition Proctored Exam

1. How is the equalization of solute concentration of intracellular fluids (ICFs) and extracellular fluids (ECFs accomplished?

A. Semipermeable membranes.
B. Hydration.
C. Osmotic pressure.
D. Perspiration.

Correct answer: C

Rationale: The correct answer is C, osmotic pressure. Osmotic pressure within the body equalizes the solute concentration of ICFs and ECFs by shifting small amounts of water in the direction of higher concentration solute. Semipermeable membranes separate one fluid compartment from another and do not directly equalize solute concentrations. Hydration and perspiration are important elements of fluid balance but do not directly achieve the equalization of solute concentrations between ICFs and ECFs, which is primarily regulated by osmotic pressure.

2. Dina, 17 years old, asks you how a tubal ligation prevents pregnancy. Which would be the best answer?

A. Prostaglandins released from the cut fallopian tubes can kill sperm
B. Sperm cannot enter the uterus because the cervical entrance is blocked
C. Sperm can no longer reach the ova, because the fallopian tubes are blocked
D. The ovary no longer releases ova as there is nowhere for them to go

Correct answer: C

Rationale: The correct answer is C: 'Sperm can no longer reach the ova because the fallopian tubes are blocked.' Tubal ligation works by blocking the fallopian tubes, preventing sperm from reaching the egg for fertilization. Choice A is incorrect because prostaglandins are not released from the cut fallopian tubes to kill sperm. Choice B is incorrect as the cervical entrance being blocked does not relate to tubal ligation. Choice D is incorrect because tubal ligation does not affect the release of ova from the ovary.

3. A nurse is providing teaching to a group of older adults about sources of complete and incomplete protein. Which of the following foods should the nurse include as a complete protein?

A. Yogurt
B. Fresh vegetables
C. Nuts
D. Dried Beans

Correct answer: A

Rationale: Yogurt is the correct answer as it is a complete protein source, containing all nine essential amino acids. Fresh vegetables, nuts, and dried beans are incomplete protein sources as they lack one or more essential amino acids required by the body.

4. Which statement about essential nutrients should the nurse include?

A. Fat-containing foods can help to decrease triglyceride levels.
B. Animal sources of protein contain 20 essential amino acids.
C. Carbohydrates are the primary source of fuel for muscles and the brain.
D. High-fiber foods are a good source of energy.

Correct answer: C

Rationale: The correct answer is C because carbohydrates are indeed the primary source of fuel for muscles and the brain. Choice A is incorrect because while certain fats are essential, they do not help decrease triglyceride levels. Choice B is incorrect because animal sources of protein do not contain all 20 essential amino acids. Choice D is incorrect because although high-fiber foods are important for digestion and overall health, they are not a direct source of energy.

5. Why are blood glucose levels high in type 1 diabetes?

A. The urinary excretion of glucose is impaired
B. The lean body mass is metabolized to produce glucose via gluconeogenesis
C. The absorption of glucose from the gastrointestinal tract is more efficient
D. There is insufficient insulin to facilitate the transport of glucose into the cells

Correct answer: D

Rationale: In type 1 diabetes, the body's immune system destroys the beta cells in the pancreas that produce insulin. This leads to an insufficient amount of insulin, which is required to facilitate the transport of glucose into the cells. Consequently, blood glucose levels remain high. The other options are incorrect. Option A is incorrect because urinary excretion of glucose does not directly contribute to blood glucose levels. Option B is incorrect because, while gluconeogenesis does produce glucose, it is not the cause of high glucose levels in type 1 diabetes. Option C is incorrect because absorption efficiency of glucose from the gastrointestinal tract does not affect the amount of insulin available to transport glucose into cells.