Gr 9 NATURAL SCIENCES: CH 1.2 The respiratory system

What happens to the diaphragm during inhalation?

It relaxes and moves upward
It contracts and moves downward (correct)
It disappears
It remains stationary

What is the primary function of the alveoli?

To store oxygen
To produce ATP
To filter out pollutants
To facilitate gaseous exchange (correct)

What is the by-product of cellular respiration?

Oxygen and glucose
Proteins and oxygen
ATP and proteins
Carbon dioxide and water (correct)

What is the common symptom of asthma?

Wheezing, coughing, and shortness of breath (C) Signup and view all the answers

What is the primary cause of lung cancer?

Smoking and exposure to radon gas (B) Signup and view all the answers

What is bronchitis?

Inflammation of the lining of the bronchial tubes (A) Signup and view all the answers

What is the primary symptom of pneumonia?

All of the above (D) Signup and view all the answers

What is tuberculosis?

A bacterium that affects the lungs and other organs (B) Signup and view all the answers

What is the best way to protect the respiratory system?

Regular exercise and avoiding smoking (B) Signup and view all the answers

What is the importance of understanding the respiratory system?

To maintain respiratory health and overall well-being (D) Signup and view all the answers

What is the primary function of the respiratory system?

To supply oxygen to the body's cells and remove carbon dioxide (D) Signup and view all the answers

What is the function of the nasal cavity?

To filter and trap dust and pathogens (C) Signup and view all the answers

What is the purpose of the pharynx?

To connect the nasal cavity and mouth to the larynx and esophagus (C) Signup and view all the answers

What is the trachea supported by?

C-shaped rings of cartilage (D) Signup and view all the answers

What is the function of the bronchi?

To distribute air throughout the lungs (A) Signup and view all the answers

What is the main function of the alveoli?

To facilitate the diffusion of oxygen into the blood and carbon dioxide out of the blood (A) Signup and view all the answers

What is the diaphragm's role in breathing?

To contract and relax to change the volume of the thoracic cavity (C) Signup and view all the answers

What is the thoracic cavity?

The space where the lungs are located (D) Signup and view all the answers

What is the purpose of the cilia in the respiratory system?

To trap and expel foreign particles (A) Signup and view all the answers

What is the primary function of the lungs?

To exchange oxygen and carbon dioxide (D) Signup and view all the answers

What happens to the air in the nasal cavity?

It is warmed, moistened, and filtered (C) Signup and view all the answers

What is the shape of the rings of cartilage in the trachea?

C-shaped (C) Signup and view all the answers

What is the structure that resembles an inverted tree in the lungs?

Bronchioles (C) Signup and view all the answers

Where does gas exchange occur in the lungs?

In the alveoli surrounded by capillaries (D) Signup and view all the answers

What is the role of the mucus and cilia in the trachea?

To trap and expel foreign particles (C) Signup and view all the answers

During exhalation, what happens to the rib cage?

It contracts (B) Signup and view all the answers

What is the location of the lungs in the body?

In the thoracic cavity (B) Signup and view all the answers

What is the role of the intercostal muscles during inhalation?

They contract (C) Signup and view all the answers

Where does gaseous exchange occur in the body?

In the lungs and body tissues (B) Signup and view all the answers

What is the function of the diaphragm?

To change the volume of the thoracic cavity (C) Signup and view all the answers

What is the passageway for both air and food?

Pharynx (C) Signup and view all the answers

What is the energy currency of cells?

ATP (A) Signup and view all the answers

What is a common trigger of asthma attacks?

Exercise (D) Signup and view all the answers

What is the outcome of the exchange of gases in the alveoli?

Oxygen is added to the blood and carbon dioxide is removed (B) Signup and view all the answers

What is the primary role of the bronchi?

To distribute air to the lungs (D) Signup and view all the answers

What is the primary cause of lung cancer?

Smoking and radon gas (B) Signup and view all the answers

What is the primary symptom of bronchitis?

Coughing (C) Signup and view all the answers

What is the primary cause of TB?

Bacterial infection (A) Signup and view all the answers

What is the importance of understanding the respiratory system?

To maintain overall health and well-being (B) Signup and view all the answers

What can help protect the respiratory system?

Regular exercise and good hygiene (B) Signup and view all the answers

What increases the volume of the thoracic cavity during inhalation?

Contraction of the intercostal muscles (A), Expansion of the rib cage (C) Signup and view all the answers

What is the site of gaseous exchange in the body?

Alveoli and capillaries (D) Signup and view all the answers

What is the outcome of cellular respiration?

Production of ATP, carbon dioxide, and water (A) Signup and view all the answers

What is the primary cause of lung cancer?

Smoking and exposure to radon gas (B) Signup and view all the answers

What is the characteristic of asthma?

Inflammation and narrowing of the airways (C) Signup and view all the answers

What is the role of the intercostal muscles during exhalation?

Relaxation and contraction of the rib cage (C) Signup and view all the answers

What is the site of cellular respiration?

Mitochondria (D) Signup and view all the answers

What is the primary symptom of bronchitis?

Persistent coughing (D) Signup and view all the answers

What is the infectious agent of tuberculosis?

Bacterium (C) Signup and view all the answers

What is the outcome of gas exchange in the alveoli?

Oxygen diffuses into the capillaries and carbon dioxide diffuses out (A) Signup and view all the answers

What is the primary purpose of the C-shaped rings of cartilage in the trachea?

To keep the trachea open (C) Signup and view all the answers

What is the role of the bronchioles in the lungs?

To distribute air throughout the lungs (B) Signup and view all the answers

What is the function of the mucus and cilia in the nasal cavity?

To filter the air entering the lungs (D) Signup and view all the answers

What is the result of gas exchange in the alveoli?

Oxygen is added to the blood and carbon dioxide is removed (A) Signup and view all the answers

What is the function of the pharynx in the respiratory system?

To serve as a passageway for both air and food (A) Signup and view all the answers

What is the role of the diaphragm in breathing?

To contract and relax to change the volume of the thoracic cavity (A) Signup and view all the answers

What is the location of the alveoli in the lungs?

At the end of the bronchioles (A) Signup and view all the answers

What is the primary function of the lungs?

To supply oxygen to the body's cells and remove carbon dioxide (C) Signup and view all the answers

What is the role of the nasal cavity in the respiratory system?

To warm and moisten the air entering the lungs (A) Signup and view all the answers

What is the function of the bronchi in the respiratory system?

To distribute air to the lungs (D) Signup and view all the answers

Gr 9 NATURAL SCIENCES: CH 1.2 The respiratory system

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Questions and Answers

What happens to the diaphragm during inhalation?

What is the primary function of the alveoli?

What is the by-product of cellular respiration?

What is the common symptom of asthma?

What is the primary cause of lung cancer?

What is bronchitis?

What is the primary symptom of pneumonia?

What is tuberculosis?

What is the best way to protect the respiratory system?

What is the importance of understanding the respiratory system?

What is the primary function of the respiratory system?

What is the function of the nasal cavity?

What is the purpose of the pharynx?

What is the trachea supported by?

What is the function of the bronchi?

What is the main function of the alveoli?

What is the diaphragm's role in breathing?

What is the thoracic cavity?

What is the purpose of the cilia in the respiratory system?

What is the primary function of the lungs?

What happens to the air in the nasal cavity?

What is the shape of the rings of cartilage in the trachea?

What is the structure that resembles an inverted tree in the lungs?

Where does gas exchange occur in the lungs?

What is the role of the mucus and cilia in the trachea?

During exhalation, what happens to the rib cage?

What is the location of the lungs in the body?

What is the role of the intercostal muscles during inhalation?

Where does gaseous exchange occur in the body?

What is the function of the diaphragm?

What is the passageway for both air and food?

What is the energy currency of cells?

What is a common trigger of asthma attacks?

What is the outcome of the exchange of gases in the alveoli?

What is the primary role of the bronchi?

What is the primary cause of lung cancer?

What is the primary symptom of bronchitis?

What is the primary cause of TB?

What is the importance of understanding the respiratory system?

What can help protect the respiratory system?

What increases the volume of the thoracic cavity during inhalation?

What is the site of gaseous exchange in the body?

What is the outcome of cellular respiration?

What is the primary cause of lung cancer?

What is the characteristic of asthma?

What is the role of the intercostal muscles during exhalation?

What is the site of cellular respiration?

What is the primary symptom of bronchitis?

What is the infectious agent of tuberculosis?

What is the outcome of gas exchange in the alveoli?

What is the primary purpose of the C-shaped rings of cartilage in the trachea?

What is the role of the bronchioles in the lungs?

What is the function of the mucus and cilia in the nasal cavity?

What is the result of gas exchange in the alveoli?

What is the function of the pharynx in the respiratory system?

What is the role of the diaphragm in breathing?

What is the location of the alveoli in the lungs?

What is the primary function of the lungs?

What is the role of the nasal cavity in the respiratory system?

What is the function of the bronchi in the respiratory system?

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