Which component forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process?

Serotonin.

Platelet factor III.

Von Willebrand factor.

Adenosine diphosphate.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

Serotonin is a neurotransmitter that plays a role in mood regulation, sleep, and other functions in the body. It is not a component that forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process.

Choice B rationale:

Platelet factor III is not a component that forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process. Platelet factor III is not widely recognized in the context of clotting; it is more commonly referred to as tissue factor and is involved in the extrinsic pathway of coagulation.

Choice C rationale:

Von Willebrand factor (VWF) is a protein that plays a crucial role in hemostasis. It forms an adhesive bridge between platelets and vascular subendothelial structures, particularly at sites of vascular injury. VWF helps platelets adhere to the injured vessel wall, leading to the formation of a stable blood clot. This process is essential for preventing excessive bleeding. A deficiency or dysfunction in VWF can lead to von Willebrand disease, a bleeding disorder characterized by prolonged bleeding times.

Choice D rationale:

Adenosine diphosphate (ADP) is a molecule released by platelets when they are activated. ADP helps in the aggregation of platelets, but it does not directly form an adhesive bridge between platelets and vascular subendothelial structures.

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Correct Answer is C

Explanation

Choice A rationale:

Buffers do not excrete weak acids; instead, they help regulate the pH of bodily fluids by preventing drastic changes in acidity or alkalinity.

Choice B rationale:

Buffers do not secrete hydrogen ions. In fact, buffers can either absorb or release hydrogen ions to maintain a stable pH.

Choice C rationale:

To convert strong acids to weak acids is the correct answer. Buffers are substances that can neutralize both acids and bases, helping to maintain a stable pH in a solution. They achieve this by accepting hydrogen ions from strong acids or donating hydrogen ions to strong bases, converting them into weaker acids or bases, respectively.

Choice D rationale:

Buffers do not convert ammonia to ammonium ions. This conversion is a part of the body's acid-base regulation system, but it is not the primary function of buffers.

A. Take enteric-coated iron with each meal. B. Take cobalamin with green, leafy vegetables. C. Take the iron with orange juice 1 hour before meals. D. Decrease the intake of the antiseizure medications to improve anemia.

Correct Answer is C

Explanation

Choice A rationale:

Enteric-coated iron is designed to be absorbed in the small intestine, not the stomach. Taking it with each meal might decrease its absorption due to interaction with food.

Choice B rationale:

Cobalamin (vitamin B12) deficiency can cause macrocytic anemia, not microcytic hypochromic anemia. Taking cobalamin with green, leafy vegetables does not address the specific iron deficiency seen in microcytic hypochromic anemia.

Choice C rationale:

Take the iron with orange juice 1 hour before meals is the correct answer. Vitamin C enhances the absorption of non-heme iron (the type of iron found in plant-based foods and iron supplements) by reducing it to a more absorbable form. Taking iron supplements with orange juice, which is high in vitamin C, can significantly improve iron absorption. Taking it before meals ensures better absorption due to reduced interaction with other dietary components.

Choice D rationale:

Decreasing the intake of antiseizure medications will not improve microcytic hypochromic anemia. Antiseizure medications do not directly influence iron absorption or the production of red blood cells.

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Which component forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process?

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Naxlex Comprehensive Predictor Exams

Which phrase describes the function of a buffer?

Correct Answer is C

Explanation

Which instruction would the nurse include in the teaching plan for a patient newly diagnosed with microcytic hypochromic anemia?

Correct Answer is C

Explanation

Which goal is a primary objective for a patient who has chronic heart failure (HF)?

Which arterial blood gas (ABG) data corresponds with a patient's clinical manifestations of respiratory alkalosis?

Which component forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process?

Which finding will the nurse expect in a patient who is hospitalized with stage I Hodgkin lymphoma?

Which change occurs first, making patients susceptible to coronary artery disease?

The nurse is teaching a patient about the administration of liquid iron supplements. Which response by the patient indicates the need for additional teaching?

The nurse recognizes that patients with von Willebrand disease are at risk for prolonged bleeding times for which reason?

The nurse provides education regarding daily activities to a patient with thrombocytopenia.Which activity identified by the patient indicates understanding of the teaching?