The video explores the human respiratory system, detailing the pathway of air from the nasal cavity to the alveoli where gas exchange occurs. It highlights the interaction of the respiratory system with other body systems like the circulatory and nervous systems, explaining how breathing is regulated. The video also discusses diverse respiratory systems in other organisms and touches on respiratory health issues and careers related to respiratory care.

What is the primary function of the human respiratory system?

• To regulate body temperature

• To facilitate the exchange of gases

• To remove waste products from the body

• To transport nutrients to cells

What structure prevents food from entering the trachea?

• Pharynx

• Larynx

• Esophagus

• Epiglottis

How many lobes does the right lung have?

• Two

• Three

• Four

• One

Where does the actual gas exchange occur in the lungs?

• Trachea

• Larynx

• Alveoli

• Bronchioles

Which system works closely with the respiratory system to deliver oxygen to the body?

• Digestive system

• Nervous system

• Circulatory system

• Muscular system

Which muscle is primarily responsible for helping to expand or contract the thoracic cavity?

• Intercostal muscles

• Abdominal wall muscles

• Pectoral muscles

• Diaphragm

What triggers the brain to increase the rate and depth of breathing?

• Decreased oxygen levels

• Increased carbon dioxide levels

• Increased oxygen levels

• Decreased nitrogen levels

Tags

NGSS.HS-LS1-3

Which of the following animals uses gills for gas exchange?

• Insects

• Fish

• Humans

• Earthworms

What is the role of surfactant in the lungs?

• To filter out pollutants

• To warm and humidify the air

• To increase oxygen absorption

• To reduce the surface tension in alveoli

What condition can premature babies suffer from due to lack of surfactant?

• Chronic Bronchitis

• Respiratory Distress Syndrome (RDS)

• Emphysema

• Asthma