ATI RN
Endocrine Review of Systems Questions Questions
Question 1 of 5
Atropine:
Correct Answer: D
Rationale: Step 1: Atropine is an anticholinergic drug that blocks muscarinic receptors. Step 2: Blocking muscarinic receptors in the eye leads to dilation of the pupil, known as mydriasis. Step 3: Therefore, the correct answer is D, as atropine indeed produces mydriasis. Summary: A is incorrect because atropine is not a neuromuscular blocker. B is incorrect as atropine actually induces tachycardia. C is incorrect as atropine inhibits GIT motility and secretion.
Question 2 of 5
Ritodrine is a drug indicated for suppressing uterine contractions in premature labor. The drug also causes bronchodilation. It has no vasoconstrictor effects, nor any effects on the size of the pupil of the eye. Which of the following is the most likely classification of this drug?
Correct Answer: C
Rationale: The correct answer is C: β-adrenergic agonist. Ritodrine is indicated for suppressing uterine contractions, which is a typical effect of β-adrenergic agonists. Bronchodilation is also a known effect of β-adrenergic agonists. Since the drug has no vasoconstrictor effects and does not affect the size of the pupil of the eye, it is unlikely to be an α-adrenergic agonist or an antimuscarinic drug. Additionally, the fact that ritodrine causes bronchodilation further supports its classification as a β-adrenergic agonist.
Question 3 of 5
What is the approximate composition of the air in the balloons?
Correct Answer: C
Rationale: The correct answer is C (21, 0.04, high). This composition represents the approximate percentage of oxygen (21%) and carbon dioxide (0.04%) in the air inside the balloons. Oxygen is a major component of the air we breathe, making up around 21% of the atmosphere. Carbon dioxide, on the other hand, is present in trace amounts, about 0.04%. The other choices are incorrect because they do not accurately represent the typical composition of air. Choice A has a low oxygen content and choice B has a high carbon dioxide content, both of which do not align with the usual composition of the air. Choice D also has a low oxygen content and high carbon dioxide content, making it incorrect.
Question 4 of 5
Which row identifies the chemical product of the fuel cell and the type of energy used to power the vehicles?
Correct Answer: C
Rationale: The correct answer is C because in a fuel cell, the chemical product is water (H2O) produced from the reaction of hydrogen and oxygen, and the energy used to power the vehicles is electrical energy generated from the electrochemical reaction in the fuel cell. Choice A (hydrogen, electrical) is incorrect because hydrogen is the input fuel, not the output product. Choice B (hydrogen, thermal) is incorrect because thermal energy is not the primary form of energy produced in a fuel cell. Choice D (water, thermal) is incorrect because while water is the product, the energy produced is electrical, not thermal.
Question 5 of 5
What is the speed of the wave?
Correct Answer: D
Rationale: The correct answer is D: 600 cm/s. The speed of a wave is determined by the formula speed = frequency x wavelength. Given that the frequency and wavelength are constant, the only way to increase the speed is to increase the frequency or the wavelength. Since both frequency and wavelength are fixed, the speed can only be increased by increasing both. Choice D, 600 cm/s, is double the speed of choice C, 300 cm/s, which indicates that both frequency and wavelength have been doubled, leading to the correct answer. Choices A and B are too low to be correct, as they are not consistent with the principles of wave speed calculation.