NZ nursing exam 2026 Questions and Answers

NZ nursing exam 2026 Questions and
Answers

Which of the following cells produce the myelin sheath in the central nervous

system? A. Schwann cells B. Oligodendrocytes C. Astrocytes D. Microglia -

Correct answer-B. Oligodendrocytes

During repolarization, which ion moves out of the neuron to restore a negative

charge inside the cell? A. Sodium B. Potassium C. Calcium D. Chloride - Correct

answer-B. Potassium

Which part of the brain is primarily responsible for processing emotions? A.

Hippocampus B. Amygdala C. Thalamus D. Cerebellum - Correct answer-B.

Amygdala

Which of the following heart valves prevents backflow of blood from the left

ventricle to the left atrium? A. Aortic valve B. Pulmonary valve C. Tricuspid valve

D. Mitral (bicuspid) valve - Correct answer-D. Mitral (bicuspid) valve

The primary pacemaker of the heart is located in which chamber? A. Left atrium B.

Right atrium C. Left ventricle D. Right ventricle - Correct answer-B. Right atrium


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,What is the function of the vena cava? A. To carry oxygenated blood to the lungs

B. To carry deoxygenated blood from the body to the heart C. To transport

oxygenated blood from the lungs to the heart D. To circulate blood within the

coronary arteries - Correct answer-B. To carry deoxygenated blood from the body

to the heart

Which coronary artery is most commonly associated with myocardial infarction

when it becomes blocked? A. Right coronary artery B. Left coronary artery C.

Circumflex artery D. Left anterior descending artery (LAD) - Correct answer-D.

Left anterior descending artery (LAD)

During ventricular systole, which valves close to prevent backflow of blood into

the atria? A. Aortic and pulmonary valves B. Mitral and tricuspid valves C.

Pulmonary and tricuspid valves D. Mitral and aortic valves - Correct answer-B.

Mitral and tricuspid valves

The P wave on an ECG (electrocardiogram) represents which part of the cardiac

cycle? A. Atrial depolarization B. Ventricular depolarization C. Ventricular

repolarization D. Atrial repolarization - Correct answer-A. Atrial depolarization

The QRS complex on an ECG represents: A. Ventricular depolarization B. Atrial

depolarization C. Atrial repolarization D. Ventricular repolarization - Correct

answer-A. Ventricular depolarization

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, Which blood vessel carries oxygenated blood from the heart to the body? A.

Pulmonary artery B. Pulmonary vein C. Superior vena cava D. Aorta - Correct

answer-D. Aorta

A patient with angina is likely experiencing what type of chest pain? A. Pain

caused by inflammation of the pericardium B. Pain due to a lack of oxygen to the

heart muscle C. Pain caused by a blockage in the pulmonary artery D. Pain related

to an electrical disturbance in the heart - Correct answer-B. Pain due to a lack of

oxygen to the heart muscle

Which cardiac enzyme is most specific for diagnosing myocardial infarction?A.

Creatine kinase (CK) B. Myoglobin C. Troponin D. Lactate dehydrogenase (LDH)

- Correct answer-C. Troponin

Which of the following best describes preload in cardiac physiology? A. The

resistance the heart must overcome to eject blood B. The amount of blood

returning to the heart and filling the ventricles C. The speed of the electrical

conduction through the heart D. The amount of blood in the coronary arteries -

Correct answer-B. The amount of blood returning to the heart and filling the

ventricles

Xerostomia - Correct answer-(decreased saliva production), or dry mouth -

common in older adults

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