sistem pernafasan

Which of the following is NOT an organ of the human respiratory system?

• Nose

• Larynx

• Bronchus

• Stomach

What is the primary function of the fine hairs and mucus in the nose during breathing?

• To warm the air

• To filter out dust and germs

• To humidify the air

• To produce sound

Apakah Anda menikmati pelajaran video tersebut?

• Ya

• Tidak

During inhalation in chest breathing, what action occurs with the intercostal muscles and ribs?

• Intercostal muscles relax, ribs move down

• Intercostal muscles contract, ribs move up

• Diaphragm contracts and flattens

• Diaphragm relaxes and arches up

What happens to the diaphragm during exhalation in abdominal breathing?

• It contracts and flattens

• It relaxes and arches upwards

• It remains stationary

• It moves downwards