The lumbar vertebra differs from the thoracic vertebra because it possesses a 

Which of the following blood vessels carries oxygenated blood into the heart? 

Filtrates in the Bowman's capsule contain vitamins because 

The structures that contain grey matter and white matter are found in the 

The diagram above is an illustration of sense organ in humans. Study it and answer questions 15 and 16. 

The part that protects the organ is labelled