Identify the structure indicated by the X in the picture below.
Fill in the blank
The Correct Answer is {"dropdown-group-1":"A"}
Correct answer: Aorta
The structure marked X is the aorta, the large artery emerging from the left ventricle that distributes oxygenated blood to the systemic circulation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Bound to the globin portion of hemoglobin: Oxygen binds the heme (iron) portion, not the globin protein chains
B. Dissolved in the plasma: Only a small fraction (~1.5%) of O₂ is dissolved in plasma
C. Bound to the heme portion of hemoglobin: Most O₂ (~98–99%) is carried as oxyhemoglobin bound to heme iron
D. In the form of bicarbonate and water: Bicarbonate transport applies to CO₂, not O₂
Correct Answer is A
Explanation
A. Monocytes: Agranulocyte -large cell with a kidney/bean-shaped nucleus that differentiates into macrophages in tissues.
B. Neutrophils: Granulocyte -multilobed nucleus and cytoplasmic granules; primary phagocytes in acute inflammation.
C. Eosinophils: Granulocyte -bilobed nucleus with large eosin-staining granules; involved in parasitic infections and allergic reactions.
D. Basophils: Granulocyte -contains histamine/heparin-filled granules and participates in allergic/inflammatory responses.
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