059 An Introduction to the Respiratory System

Leslie Samuel introduces the respiratory system, highlighting its role in exercise and cellular respiration. He explains the chemical equation for cellular respiration, emphasizing the importance of oxygen and glucose in producing energy. The interaction between the circulatory and respiratory systems is discussed, focusing on how oxygen is transported and carbon dioxide is expelled. The video concludes with an invitation to explore more biology resources.

What is the primary function of the respiratory system?

• To circulate blood throughout the body

• To exchange oxygen and carbon dioxide

• To produce hormones

• To digest food and absorb nutrients

Which of the following is the correct chemical equation for cellular respiration?

• C6H12O6 + 6O2 → 6CO2 + 6H2O

• 6CO2 + 6H2O → C6H12O6 + 6O2

• 6O2 + 6CO2 → C6H12O6 + 6H2O

• C6H12O6 + 6H2O → 6CO2 + 6O2

What is glucose classified as?

• A protein

• A nucleic acid

• A lipid

• A carbohydrate

Where do humans primarily obtain glucose from?

• Drinking water

• Eating food

• Breathing

• Sunlight

What is the role of carbon dioxide in cellular respiration?

• It is a product

• It is not involved

• It is a catalyst

• It is a reactant

What is the function of the pulmonary vein?

• To carry oxygenated blood to the heart

• To carry deoxygenated blood to the lungs

• To carry oxygenated blood to the lungs

• To carry deoxygenated blood to the heart

Which part of the respiratory system is responsible for voice production?

• Bronchi

• Alveoli

• Larynx

• Trachea

What is the role of the diaphragm in breathing?

• It filters air entering the lungs

• It contracts to expand the lungs

• It warms the air before it enters the lungs

• It produces mucus to trap dust

Through which structures does air pass after the trachea?

• Nasal cavity and oral cavity

• Pharynx and larynx

• Bronchi and bronchioles

• Alveoli and bronchioles

What happens to the color of blood as it becomes oxygenated in the lungs?

• It turns purple

• It turns red

• It turns blue

• It turns green