Respiratory System

The structures the trachea branch into?

• Alveoli

• Bronchi

• Bronchioles

• Epiglottis

When we inhale as the pressure in the thorax

• Increases

• Decreases

The correct labelling of the diagram is

• A- Bronchi B- Trachea C- Bronchiole D- Diaphragm

• A- Bronchiole B- Trachea C- Bronchi D- Diaphragm

• A- Trachea B- Bronchi C- Diaphragm D- Bronchiole

• A- Trachea B- Bronchi C- Bronchiole D- Diaphragm

We exhale when ....

• the diaphragm contracts and moves upwards

• the diaphragm relaxes and moves upwards

• the diaphragm relaxes and flattens

• the diaphragm contracts and flattens

Which statements about atmospheric and exhaled air is correct?

• Exhaled air contains more carbon dioxide than atmospheric air does

• Exhaled air contains more oxygen than atmospheric air does

• Exhaled air contains less carbon dioxide than atmospheric air does

• Exhaled air contains less oxygen than atmospheric air does

Which of these is an adaptation for efficient gas exchange in the air sacs?

• Thin walls

• Rich supply of blood vessels

• Large numbers

• All the above

During exercise, what happens to breathing in humans?

• The depth of breathing increases and the breathing rate increases

• The breathing rate increases but not the depth of breathing

• The depth of breathing increases but not the breathing rate

During swallowing of food, the opening to _______ is covered by epiglottis.

• Trachea

• Pharynx

• Oesophagus

• Larynx