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2024 ATI PN Anatomy and Physiology Exam New Latest Version with All Questions, Answers and Rationale

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2024 ATI PN Anatomy and Physiology Exam New Latest Version with All Questions, Answers and Rationale

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  • 21 février 2024
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  • 2023/2024
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  • 2024 ATI PN Anatomy and Physiology
  • 2024 ATI PN Anatomy and Physiology

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Par: ddunkchristlikejess • 4 mois de cela

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2024 ATI PN Anatomy and P hysiology Exam New Latest Version with All Ques tions , Answers and Rational e Question 1: Vasoconstriction causes:. A. Decreased pressure and decreased flow. B. Decreased pressure and increased flow. C. Increased pressure and increased flow. D. Increased pressure and decreased flow. Show correct answer and explanation Explanation The correct answer is Choice D. Choice A rationale: Vasoconstriction refers to the narrowing of blood vessels. When blood vessels constrict, they reduce the volume of blood that can flow through them, which increases the pressure. However, the flow is decreased, not increased. Choice B rationale: As explained above, vasoconstriction increases pressure but decreases flow. Choice C rationale: While vasoconstriction does increase pressure, it does not increase flow. Instead, it decreases flow. Choice D rationale: Vasoconstriction results in increased pressure and decreased flow. This happens because the narrowing of the blood vessels increases the resistance to blood flow, thereby increasing the pressure. At the same time, the reduced diameter of the blood vessels decreases the amount of blood that can flow through them. Question 2: Which brain structure coordinates blood pressure control?. A. Baroreceptors. B. Brainstem. C. Medulla. D. Thalamus. Show correct answer and explanation Explanation Answer and explanation The correct answer is Choice C. Choice A rationale: Baroreceptors are sensors located in the blood vessels that detect changes in blood pressure. However, they do not coordinate blood pressure control. They send signals to the brain about blood pressure changes, and the brain coordinates the response. Choice B rationale: The brainstem is a part of the brain that connects the cerebrum with the spinal cord. It contains structures that are involved in many vital body functions, including breathing and heart rate regulation. However, it is not the primary structure that coordi nates blood pressure control. Choice C rationale: The medulla oblongata, a part of the brainstem, contains the cardiovascular centers that coordinate the regulation of heart rate and blood pressure. Choice D rationale: The thalamus is a part of the brain that is primarily involved in processing sensory information and regulating consciousness, sleep, and alertness. It does not coordinate blood pressure control. Question 3: Where does air pick up moisture and heat from the mucosa?. A. Conchae or turbinates. B. Sphenoid. C. Nasopharynx. D. Oropharynx. Show correct answer and explanation Explanation Answer and explanation The correct answer is Choice A. Choice A rationale: The conchae or turbinates are structures in the nasal cavity that increase the surface area of the mucosa exposed to the air. As air passes over the mucosa, it picks up moisture and heat, which helps to humidify and warm the air before it reaches the lungs . Choice B rationale: The sphenoid is a bone located at the base of the skull. It does not have a direct role in the heating or humidification of air. Choice C rationale: The nasopharynx is part of the pharynx that connects the nasal cavity to the throat. While it does play a role in the passage of air from the nose to the lungs, it is not the primary site where air picks up moisture and heat. Choice D rationale: The oropharynx is another part of the pharynx, located below the nasopharynx. It is involved in both respiratory and digestive processes, but it is not the main site where air picks up moisture and heat. So, the correct answer is Choice A, after analyzing all choices. Question 4: Which condition would you expect to accompany atherosclerosis, a disorder in which arteries lose elasticity and have fatty buildup inside the vessels?. A. Increased blood viscosity. B. Irregular heartbeat. C. High blood pressure. D. Low blood pressure. Show correct answer and explanation Explanation Choice A rationale: Increased blood viscosity is not typically associated with atherosclerosis. While high blood viscosity can contribute to cardiovascular problems, it is not a condition that you would expect to accompany atherosclerosis. Choice B rationale: Irregular heartbeat, or arrhythmia, is not typically a condition that accompanies atherosclerosis. While atherosclerosis can increase the risk of certain types of arrhythmias, it is not a direct result of the disease. Choice C rationale: High blood pressure, or hypertension, is often associated with atherosclerosis. The buildup of plaque in the arteries causes them to narrow and stiffen, which increases the resistance to blood flow and consequently increases blood pressure. Choice D rationale: Low blood pressure is not typically associated with atherosclerosis. Atherosclerosis tends to increase blood pressure rather than decrease it. Question 5: Which of the following is true about the sinuses? Select all that apply. (Select All that Apply.). A. Air-filled cavities. B. Located in the skull and around the nose. C. Help lighten the head. D. Gas exchange occurs. Show correct answer and explanation Explanation Choice A rationale: Sinuses are indeed air -filled cavities. They are hollow spaces in the skull and the face bones around your nose.

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