Understanding Breathing and Respiration

What is the primary function of the lungs in gas exchange?

• To produce hormones for digestion.

• To regulate body temperature.

• To facilitate gas exchange of oxygen and carbon dioxide.

• To filter impurities from the blood.

Describe the process of cellular respiration.

• Cellular respiration is the breakdown of proteins into amino acids for energy.

• Cellular respiration occurs only in plants during photosynthesis.

• The process of cellular respiration produces only glucose and oxygen.

• Cellular respiration is the process of converting glucose and oxygen into energy (ATP), carbon dioxide, and water through Glycolysis, the Krebs Cycle, and the Electron Transport Chain.

What are the main muscles involved in human breathing?

• Pectoral and abdominal muscles

• Quadriceps and hamstrings

• Diaphragm and intercostal muscles

• Biceps and triceps

How does exercise affect the rate of breathing?

• Exercise only affects heart rate, not breathing.

• Exercise increases the rate of breathing.

• Exercise has no effect on the rate of breathing.

• Exercise decreases the rate of breathing.

Name the main parts of the respiratory system.

• Nose, pharynx, larynx, trachea, bronchi, lungs

• Heart, arteries, veins, capillaries

• Stomach, intestines, liver, pancreas

• Brain, spinal cord, nerves, neurons

What gas do we inhale and what gas do we exhale?

• Inhale nitrogen (N2), exhale oxygen (O2)

• Inhale oxygen (O2), exhale carbon dioxide (CO2)

• Inhale carbon dioxide (CO2), exhale oxygen (O2)

• Inhale helium (He), exhale methane (CH4)

Explain the role of alveoli in the lungs.

• Alveoli help in the mechanical movement of the lungs during breathing.

• Alveoli are responsible for producing mucus in the lungs.

• The role of alveoli in the lungs is to facilitate gas exchange between the air and the bloodstream.

• Alveoli store oxygen for later use in the body.

What is the difference between aerobic and anaerobic respiration?

• Aerobic respiration uses oxygen and produces more energy, while anaerobic respiration does not use oxygen and produces less energy.

• Both aerobic and anaerobic respiration require oxygen to function.

• Aerobic respiration occurs only in plants, while anaerobic respiration occurs in animals.

• Anaerobic respiration produces more energy than aerobic respiration.

How does the diaphragm contribute to breathing?

• The diaphragm only helps with exhaling air.

• The diaphragm is not involved in the breathing process.

• The diaphragm expands to push air into the lungs.

• The diaphragm helps in breathing by contracting to allow air in and relaxing to push air out.

What happens to breathing rate during intense physical activity?

• Breathing rate fluctuates randomly.

• Breathing rate decreases.

• Breathing rate increases.

• Breathing rate remains the same.