It is an uninterrupted circle of protective lymphoid tissue at the upper ends of the respiratory and alimentary tracts.

  • Also known as Nasal Associated Lymphoid Tissue (NALT).
  • Consists of the palatine, nasopharyngeal, lingual and tubal tonsils.
  • Produces B and T lymphocytes.
  • Involved in local defence.
  • Also produce lymphocytes to send to other lymph nodes.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s