Question 1

What is the primary function of ionized calcium in the human body?

Accepted Answer

Muscle contraction

Answer

Bone formation

Answer

Nerve impulse transmission

Answer

Blood clotting

Question 2

Which condition is commonly associated with low levels of ionized calcium in the blood?

Accepted Answer

Hypoparathyroidism

Answer

Hyperparathyroidism

Answer

Osteoporosis

Answer

Vitamin D intoxication

Question 3

What is the normal range for ionized calcium levels in the human blood?

Accepted Answer

4.5 to 5.6 mg/dL

Answer

5.0 to 6.0 mg/dL

Answer

3.0 to 4.0 mg/dL

Answer

6.0 to 7.0 mg/dL

Question 4

Which of the following is a risk factor for developing hypocalcemia related to ionized calcium levels?

Accepted Answer

Chronic kidney disease

Answer

High dietary calcium intake

Answer

Regular exercise

Answer

Excessive sunlight exposure

Question 5

What role does ionized calcium play in neurotransmission?

Accepted Answer

It facilitates the release of neurotransmitters

Answer

It strengthens the blood-brain barrier

Answer

It increases synaptic plasticity

Answer

It reduces neuronal firing

Question 6

Which hormone is primarily responsible for increasing ionized calcium levels in the blood?

Accepted Answer

Parathyroid hormone (PTH)

Answer

Insulin

Answer

Somatostatin

Answer

Calcitonin

Question 7

What is the effect of acidosis on ionized calcium levels in the blood?

Accepted Answer

It increases ionized calcium levels

Answer

It decreases ionized calcium levels

Answer

It has no effect on ionized calcium levels

Answer

It causes a temporary increase followed by a decrease

Question 8

What condition can result from prolonged states of hypocalcemia due to low ionized calcium levels?

Accepted Answer

Tetany

Answer

Bone fracture

Answer

Diabetes

Answer

Hypotension

Question 9

What laboratory test is commonly used to measure ionized calcium levels in the blood?

Accepted Answer

Ionized calcium test

Answer

Complete blood count (CBC)

Answer

Serum creatinine test

Answer

Liver function test (LFT)

Question 10

Which vitamin is essential for the absorption of calcium and therefore influences ionized calcium levels?

Accepted Answer

Vitamin D

Answer

Vitamin A

Answer

Vitamin C

Answer

Vitamin K

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