B11 Animals (4) - Respiratory diffusion

True or false: you can choose not to breathe

• True

• False

What produces carbon dioxide in the body?

• Cellular respiration

• Breathing
• Drinking water
• Exercising

Which has higher energy?

• ATP

• ADP

Which location does not have gas exchange?

• The lungs

• The tissues

• The bloodstream

What important feature of a respiratory system is not fulfilled by the lungs?

• A thin permeable respiratory membrane for diffusion

• A large surface area for gas exchange

• A good supply of blood

• bringing oxygen-rich air to the respiratory membrane

What stops the trachea from collapsing?

• Smooth muscles
• Ligaments
• Adipose tissue
• C-shaped rings of cartilage

About how many alveoli do humans have?

• 1

• 2

• 10

• 300 million

What muscles are responsible for inhalation?

• diaphragm and intercostal muscles
• biceps and triceps
• quadriceps and hamstrings
• abdominal muscles and pectoral muscles

To exhale: the diaphragm ___

• contracts and moves upward
• relaxes and moves downward
• relaxes and moves upward
• contracts and moves downward

The volume of air left in the lungs so they won't collapse is called the

• residual volume
• expiratory reserve volume
• inspiratory reserve volume
• tidal volume