Regulating Carbon Dioxide and pH Levels in Homeostasis

Why is the topic of carbon dioxide regulation relevant to Grade 11 students?

• It is part of the respiratory system curriculum.

• It is part of the digestive system curriculum.

• It is part of the circulatory system curriculum.

• It is part of the nervous system curriculum.

What can the body regulate in the bloodstream?

• Water levels

• Glucose levels

• Carbon dioxide levels

• Oxygen levels

Why is it important to maintain the pH of the blood?

• To prevent enzyme denaturation

• To increase oxygen levels

• To decrease glucose levels

• To regulate water balance

Where is carbon dioxide regulated in the body?

• In the carotid artery and aorta

• In the liver

• In the kidneys

• In the lungs

What is the role of chemoreceptors in carbon dioxide regulation?

• They detect water levels

• They detect glucose levels

• They detect carbon dioxide levels

• They detect oxygen levels

Where is the medulla oblongata located?

• In the heart

• In the lungs

• In the brainstem

• In the liver

What corrective measure does the medulla oblongata initiate to regulate carbon dioxide levels?

• Increasing glucose levels

• Decreasing the breathing rate

• Increasing the breathing rate

• Slowing down the heart rate

What is acidosis?

• A condition where blood oxygen is too low

• A condition where blood pH is too acidic

• A condition where blood pH is too alkaline

• A condition where blood glucose is too high

What is the function of the diaphragm in carbon dioxide regulation?

• To slow down the heart rate

• To regulate water balance

• To contract faster and deeper for breathing

• To increase glucose levels

What is the largest blood vessel in the body?

• Pulmonary artery

• Aorta

• Carotid artery

• Femoral artery