IB gas Exchange SL

Muscle that works in the opposite direction to another muscle; .................................................

e.g. diaphragm and abdominal muscles

Air sacs made from pneumocytes and blood capillaries, that form the gas exchange surface of the lungs; ............................................

Which of the following shows what happens to the chest cavity when air rushes into the lungs?

• decrease in volume

• deflates

• expands

• relaxes

How do you describe the condition of the diaphragm as one exhales?

• the diaphragm contracts

• the diaphragm relaxes

• the diaphragm goes down

• both a and c

Tags

NGSS.MS-LS1-3

A person has vital capacity of 5L and residual volume of 1.2 L. Total lung capacity –

• 6.2 L

• 4.8 L

• 500 ml

• None

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

• Inspiratory Reserve Volume

• Tidal Volume

• Expiratory Reserve Volume

• Residual Volume

What is the volume that remains in the lungs even after a forceful exhale

• expiratory reserve
• residual volume
• inspiratory reserve
• total lung capacity

What muscles are used in breathing in and breathing out?

• diaphragm and intercostals
• diaphragm and lungs
• lungs and ribs
• lungs and diaphragm

The volume of a normal breath 

• 3000mL
• 2400mL
• 1200mL
• 500mL

What is the volume of one breath called?

• minute ventilation
• inspiratory capacity
• tidal volume
• vital capacity