Human Year 4

What happen when we inhale?

• the chest move upward

• the chest move downward

• the chest move upward and downward

Name the organs involved during breathing

• nose,lung

• nose,trachea,lung

• nose,trachea

where is the gas exchange takes place during inhale?

• mouth

• nose

• lung

State the air passage during inhalation

• Nose → Trachea →

  Lungs

• Nose → lung → Trachea

• Mouth → nose → Trachea

• Mouth → Lungs → Trachea

When jogging,the rate of breathing is

• Low

• medium

• high

Inhaled air contain more ____________ compared to exhaled air.

What is the organ shown in the picture?

• lung

• trachea

• nose

Why does your breathing rate increase when you exercise?

• Breathing rate increases to cool down the body temperature.
• Breathing rate remains the same regardless of activity level.
• Breathing rate decreases to conserve energy during exercise.
• Your breathing rate increases to supply more oxygen to your muscles and remove carbon dioxide.

Choose 3 situation which will give bad effect on human breathing.

• 
• 
• 
• 

Which process best describes breathing?

• Breathing is the process of digesting food.
• Breathing involves only inhaling air.
• Breathing is the process of inhaling and exhaling air.
• Breathing is the act of sleeping.