Breathing Physiology

What muscles are used in breathing in and breathing out?

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

What is the volume of one breath called?

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

When air pressure inside the lungs is less than air pressure in the atmosphere...

• Air moves into the lungs
• Air moves out of the lungs

Which of the following lung capacities is the volume of air that can be maximally exhaled after a maximum inhalation?

• inspiratory capacity
• functional residual capacity
• vital capacity
• total lung capacity

When the diaphragm contracts...

• the volume of the thoracic cavity increases and the pressure decreases, causing air to rush into the lungs.
• the volume of the thoracic cavity decreases and the pressure increases causing air to rush out of the lungs. 

What primary gas product is removed from your system during Exhalation?

• Air

• Oxygen

• Carbon Dioxide

• Carbon Monoxide

Where the exchange of gases actually occur?

• Bronchi

• Trachea

• Oxygen

• Alveoli

The thin skeletal muscle that sits at the base of the chest and separates the abdomen from the chest. It contracts and flattens when you inhale.

• Intercostal

• Diaphragm

• Epiglottis

• Larynx

When you breathe the diaphragm _______    ____ creating more space for more air.

• raises high
• raises low
• lifts high
• flattens out

What is the process called when you breath in the air?

• inspiration

• expiration