Chapter 8 Quiz 1

The diagram shows the human breathing system.

Identify structure P.

• air sac

• diaphragm

• rib

• trachea

The diagram shows the human breathing system.

Identify structure Q.

• air sac

• diaphragm

• rib

• trachea

The diagram shows the human breathing system.

Identify structure R.

• air sac

• diaphragm

• rib

• trachea

The diagram shows the human breathing system.

Identify structure S.

• air sac

• diaphragm

• rib

• trachea

The diagram shows the human breathing system.

Which labelled structure is the site of gas exchange?

• P

• Q

• R

• S

The diagram shows the human breathing system.

Which labelled structure is supported by cartilage?

• P

• Q

• R

• S

Inhaled air has a ____________ oxygen concentration than exhaled air.

• higher

• lower

Exhaled air has a ____________ carbon dioxide concentration than inhaled air.

• higher

• lower

Exhaled air is saturated with _________________.

• nitrogen

• water vapour

The temperature of exhaled air is ______________.

• variable

• close to body temperature