# data[].attributes.headline
Bladder and Arteries, stretchable and blocks diffusion  

# data[].attributes.subject
Bladder and Arteries, stretchable and blocks diffusion  

# data[].attributes.headline
Air sac in lungs, Diffusion and filtration

# data[].attributes.subject
Air sac in lungs, Diffusion and filtration

# data[].attributes.headline
Digestive System, Contracts in every direction

# data[].attributes.subject
Digestive System, Contracts in every direction

# data[].attributes.headline
Muscle Connected to Bones, contracted by lever

# data[].attributes.subject
Muscle Connected to Bones, contracted by lever

# data[].attributes.headline
Between Vertebrae, though shock absorbtion 

# data[].attributes.subject
Between Vertebrae, though shock absorbtion 

# data[].attributes.headline
Covers ends of bones and provides friction for cushion

# data[].attributes.subject
Covers ends of bones and provides friction for cushion