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HESI A2 Nurse Hub Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
Which electrolyte is essential for muscle contraction and nerve transmission?✔✔Potassium
What is the medical term for a heart attack?✔✔Myocardial infarction
Which part of the eye controls the amount of light entering?✔✔Iris
Which organ produces insulin?✔✔Pancreas
What is the main function of hemoglobin?✔✔Carry oxygen in red blood cells
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Which side of the heart pumps blood to the lungs?✔✔Right side
What is the normal range for oxygen saturation in healthy adults?✔✔95% to 100%
What is the term for inflammation of the liver?✔✔Hepatitis
Which vitamin is produced when skin is exposed to sunlight?✔✔Vitamin D
What is the name of the bone that protects the brain?✔✔Skull
Which organ stores bile?✔✔Gallbladder
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What is the function of the large intestine?✔✔Absorb water and form stool
What is the normal respiratory rate for a newborn?✔✔30 to 60 breaths per minute
What is the main function of the lymphatic system?✔✔Return fluid to the bloodstream and fight infection
What is the smallest bone in the human body?✔✔Stapes (in the ear)
Which hormone regulates blood sugar by lowering it?✔✔Insulin
What is the largest vein in the body?✔✔Inferior vena cava
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