Exploring Circulation and Gas Exchange in the Alveoli

What is the primary cause of death in fire-related incidents?

• Dehydration

• Physical injuries

• Smoke inhalation

• Burns

Why can't humans breathe underwater like fish?

• Lack of available oxygen

• Temperature of the water

• Presence of harmful bacteria

• Water is too dense

What is the main purpose of the heart in the circulatory system?

• To filter blood

• To produce blood cells

• To regulate body temperature

• To keep blood flowing throughout the body

What is the primary function of the diaphragm in respiration?

• To filter air

• To produce vocal sounds

• To circulate blood

• To increase lung volume

Which law explains the relationship between gas volume and pressure in the lungs?

• Newton's First Law

• Boyle's Law

• Bernoulli's Principle

• Charles's Law

How does the body respond to increased carbon dioxide levels during exercise?

• Increases breathing rate

• Decreases blood flow

• Slows down breathing

• Increases heart rate

Tags

NGSS.HS-LS1-3

Why does the left ventricle have thicker walls than the right?

• To pump blood to the entire body

• To filter blood

• To pump blood to the lungs

• To store more blood

What role does hemoglobin play in the blood?

• Fighting infections

• Transporting oxygen

• Clotting blood

• Regulating blood sugar

What is the function of valves in the veins?

• To prevent backflow of blood

• To increase blood pressure

• To absorb nutrients

• To filter out toxins

What happens to the muscles during anaerobic respiration?

• They contract without using oxygen

• They store excess oxygen

• They stop functioning

• They relax completely

Tags

NGSS.HS-LS2-3