The development of atherosclerosis is a process of sequential events. Arrange the pathophysiological events in order of occurrence. Place the first event on top, and the last on the bottom.

Arterial endothelium injury causes Inflammation.

Vessel narrowing results in ischemia.

Foam cells release growth factors for smooth muscle cells.

Macrophages consume low-density lipoprotein (LDL), creating foam cells.

Smooth muscle grows over fatty streaks creating fibrous plaques.

Answer and Explanation

The Correct Answer is A,D,C,E,B

This sequence starts with an injury to the arterial endothelium, leading to inflammation. Macrophages then consume LDL, forming foam cells. These foam cells release growth factors that stimulate the growth of smooth muscle cells. The smooth muscle cells grow over the fatty streaks, creating fibrous plaques. Finally, as these plaques grow, they narrow the vessel, which can result in ischemia. This is a simplified explanation of a complex process that involves many other factors and steps. It’s also important to note that this process can take many years to develop.

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Correct Answer is A

Explanation

A) Deficiency of factors VIII or IX.

Hemophilia is a genetic disorder characterized by deficient or defective clotting factors, specifically factors VIII (hemophilia A) or IX (hemophilia B). These clotting factors are essential for the formation of stable blood clots. Therefore, if hemophilia is present, the deficiency of factors VIII or IX can lead to impaired clot formation and prolonged bleeding.

B) Diminished amount of vitamin K:

Vitamin K deficiency can lead to impaired blood clotting due to inadequate synthesis of clotting factors in the liver. However, hemophilia is specifically associated with deficiencies in factors VIII or IX, not vitamin K.

C) Decreased amount of platelets:

Platelets play a crucial role in primary hemostasis and initial platelet plug formation at the site of vascular injury. While decreased platelet count or dysfunction can lead to bleeding disorders such as thrombocytopenia or platelet function disorders, hemophilia specifically involves deficiencies in clotting factors, not platelets.

D) Missing factors V and VII:

Factor V and VII are other clotting factors involved in the coagulation cascade, but they are not deficient in hemophilia. Hemophilia is specifically characterized by deficiencies in factors VIII (hemophilia A) or IX (hemophilia B).

A. Bronchioles. B. Trachea. C. Bronchi. D. Alveoli.

Correct Answer is D

Explanation

A) Bronchioles:

Bronchioles are small airways in the lungs that lack cartilage and are primarily responsible for conducting air to the alveoli. While changes in bronchioles, such as bronchoconstriction or bronchiolitis, can contribute to airflow limitation in conditions like asthma or chronic bronchitis, they are not primarily associated with the pathophysiological processes of emphysema.

B) Trachea:

The trachea, or windpipe, is the large airway that connects the larynx to the bronchi. It serves as a conduit for air movement into and out of the lungs but is not directly involved in gas exchange. Changes in the trachea are not typically associated with the pathophysiological processes of emphysema.

C) Bronchi:

Bronchi are larger airways in the lungs that branch off from the trachea and further divide into bronchioles. While chronic bronchitis, a common comorbidity of emphysema in chronic obstructive pulmonary disease (COPD), primarily affects the bronchi, it is not the primary structure associated with the pathophysiological processes of emphysema.

D) Alveoli:

Correct. Emphysema is a type of COPD characterized by the destruction of alveolar walls, leading to enlarged airspaces and loss of lung elasticity. This structural damage results in decreased surface area for gas exchange and impaired diffusion of oxygen and carbon dioxide across the alveolar-capillary membrane. Alveolar destruction in emphysema leads to poor gas exchange and contributes to the characteristic symptoms of dyspnea, hypoxemia, and hypercapnia in affected individuals. Therefore, the alveoli are directly associated with the pathophysiological processes of emphysema

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The development of atherosclerosis is a process of sequential events. Arrange the pathophysiological events in order of occurrence. Place the first event on top, and the last on the bottom.

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Naxlex Comprehensive Predictor Exams

In caring for an infant after circumcision, the nurse observes continued bleeding from the site and suspects hemophilia. Which hematological components are insufficient causing bleeding if hemophilia is present?

Correct Answer is A

Explanation

A client with end stage emphysema is experiencing poor gas exchange. Which respiratory structure is associated with the pathophysiological processes in emphysema?

Correct Answer is D

Explanation

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