Question

Which one of the following is devoid of macrophages?

• A. Lymph nodes
• B. Connective tissue
• C. Lungs
• D. None of the above

Answer 1

The correct option is D None of the above

A. The lymph node is in the form of fibres called reticulum with white blood cells attached to it, lymph sinus is lined by reticular cells and macrophages.

B. Macrophages are derived from monocytes (WBCs) and found in the connective tissue such as blood the bloodstream and they mature into macrophages as they leave the bloodstream.

C. Macrophage in the lungs are called alveolar macrophages or dust cell and clears the air spaces from infectious and toxic particles that have entered the body.

So the correct answer is 'None of the above'.