Process of Breathing (Inhalation)

During inhalation, which muscle contracts to increase the size of the chest cavity?

• lungs

• Diaphragm

• ribs

• heart

Which gas is primarily taken in during inhalation?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

Based on diagram, which statement is correct?

• When balloon expand, air pressure increases

• When balloon expand, volume increases

• When balloon expand, air forces out from the balloon

• When balloon expand is exhalation process

Which of the following show the air passage for inhalation?

• lungs --> nose --> trachea

• nose --> trachea --> lungs

• nose --> lungs --> trachea

• trachea --> lungs --> nose

How do your chest move during inhalation?

• goes upward and inflate

• goes downward and contract

• no movement

• goes upward and deflate

During inhalation the diaphragm

• contracts causing it to move up

• contracts causing it to move down

• relaxes causing it to move up

• relaxes causing it to move down

During inhalation, the ribs move .....

• upward and downward

• upward and outward

• downward and outward

• downward and inward

During inhalation the air is sucked into the lungs when the pressure in the lungs

• increases

• decreases

The main ORGAN responsible for breathing is:

• the Brain

• the Lungs

• the Liver

• the Kidneys