L-11 Breathe in Breathe out

The lungs are protected by the-

• thoracic cavty

• rib cage

• skeleton

• skull

Tiny air sacs where exchange of gases takes place is-

• Alveoli

• bronchioles

• bronchi

• trachea

The voice box is also called as-

• pharynx

• trachea

• larynx

• lungs

The dome shaped muscle beneath the lungs is known as-

• ribs

• thoracic cavity

• diaphragm

• rib cage

When we breathe in the chest cavity ______

• expands

• contracts

When we breathe out the diaphragm-

• relaxes/expands

• moves down

• contracts

An adult's lungs can contain up to _________ litres of air.

Due to the increase in the level of air pollution diseases like _____________ are on the rise.

• asthma

• bronchitis

• lungs cancer

• breathing difficulties

The first step of breathing is -

• Exhalation

• Inhalation

When your hands become numb in winters then, your breath will be-

• cool

• warm