ATI RN
Nursing Fundamentals Oxygenation Questions Questions
Question 1 of 5
It is the hair the lines the vestibule which function as a filtering mechanism for foreign objects
Correct Answer: D
Rationale: Vibrissae are the coarse hairs in the nasal vestibule that filter out dust and large particles from inspired air, acting as a primary defense mechanism.
Question 2 of 5
This is the amount of heat required to raise the temperature of 1 kg water to 1 degree Celsius
Correct Answer: A
Rationale: A calorie is defined as the heat required to raise 1 kg of water by 1°C, a standard unit of energy.
Question 3 of 5
Which of the following is the first sign of dehydration?
Correct Answer: C
Rationale: Thirst is the earliest physiological sign of dehydration, signaling the body to replenish fluids.
Question 4 of 5
What is the BMI Of Budek, weighing 120 lbs and has a height of 5 feet 7 inches.
Correct Answer: A
Rationale: For 5'7 (67 inches) and 120 lbs, BMI = (120 ×703) / (67²) = 18.8, closest to 20 (normal range).
Question 5 of 5
Which of the following factors will have the greatest influence on evaporation in a humidifier?
Correct Answer: D
Rationale: Temperature has the greatest influence on evaporation rate in a humidifier because it directly affects the kinetic energy of water molecules, increasing vaporization more than surface area, time, or pressure.