Lobe (anatomy)

In anatomy, a lobe is a clear anatomical division or extension of an organ (as seen for example in the brain, lung, liver, or kidney) that can be determined without the use of a microscope at the gross anatomy level. This is in contrast to the much smaller lobule, which is a clear division only visible under the microscope.

Interlobar ducts connect lobes and interlobular ducts connect lobules.

Examples of lobes

• The four main lobes of the brain the frontal lobe the parietal lobe the occipital lobe the temporal lobe
• The three lobes of the human cerebellum the flocculonodular lobe the anterior lobe the posterior lobe
• The two lobes of the thymus
• The two and three lobes of the lungs Left lung: superior and inferior Right lung: superior, middle, and inferior
• The four lobes of the liver Left lobe of liver Right lobe of liver Quadrate lobe of liver Caudate lobe of liver
• The renal lobes of the kidney
• Earlobes

Examples of lobules

• the cortical lobules of the kidney
• the testicular lobules of the testis
• the lobules of the mammary gland
• the pulmonary lobules of the lung
• the lobules of the thymus