Biology

What element is essential for cell membrane integrity and muscle contraction?

• Magnesium

• Sodium

• Calcium

• Potassium

What is the eight-letter term for the study of tumors?

• pathology

• hematology

• radiology

• oncology

Which gas regulates heart and respiratory activity in humans?

• Nitrogen (N2)

• Hydrogen (H2)

• Oxygen (O2)

• Carbon dioxide (CO2)

What is the primary function of calcium in the body?

• Regulating blood sugar levels

• Producing hormones and enzymes

• The primary function of calcium in the body is to build and maintain strong bones and teeth.

• Transporting oxygen in the blood

Name the branch of medicine that deals with cancer.

• Hematology

• Pathology

• Oncology

• Radiology

What role does oxygen play in muscle activity?

• Oxygen is crucial for energy production in muscles during activity.

• Oxygen is a waste product of muscle activity.

• Oxygen is only needed for recovery after exercise.

• Oxygen decreases muscle performance during exercise.

Identify the gas that can cause narcosis with mental disturbances.

• Carbon dioxide

• Nitrous oxide

• Oxygen

• Helium

What is the most important element in bone salt?

• Calcium

• Iron

• Magnesium

• Phosphorus

How does calcium contribute to blood coagulation?

• Calcium is essential for the activation of clotting factors and the conversion of prothrombin to thrombin in blood coagulation.

• Calcium acts as a natural anticoagulant in the bloodstream.

• Calcium is only involved in muscle contraction, not coagulation.

• Calcium prevents blood clotting by dissolving clots.

What is the relationship between oxygen and cardiac rhythmicity?

• Oxygen decreases heart rate by inhibiting ATP production.

• Oxygen has no effect on cardiac function or rhythm.

• Oxygen is crucial for maintaining cardiac rhythmicity by supporting aerobic metabolism and ATP production in heart cells.

• Oxygen is only important for lung function, not the heart.