Waldeyer Inner and Outer lymphatic ring

Waldeyer’s lymphatic ring is a collection of lymphoid tissue
It is also called as Waldeyer’s-Pirogov tonsillar ring

It is divide into 2 types based on its location:

1. Waldeyer’s outer ring: present in the neck
2. Waldeyer’s inner ring / Waldeyer’s tonsillar ring: The lymphatic ring present around the pharynx

Functions and Importance of Waldeyer lymphatic ring:

• It plays an important role in protection against pathogens
• It was named after the nineteenth century German anatomist Heinrich Wilhelm Gottfried von Waldeyer-Hartz.

Waldeyer’s inner ring
It is located in the nasopharynx and oropharynx
The components are:

• Adenoids (nasopharyngeal tonsil)
• Tubal tonsil
• Palatine tonsil
• Lingual tonsil

It helps protect the body against inhaled and ingested pathogens

Waldeyer’s outer ring
It is composed of various lymph nodes in the neck – mostly cervical lymph nodes
The component lymph nodes are:

• Occipital
• Post auricular
• Pre auricular
• Parotid
• Facial (superficial – upper, middle, lower; deep)
• Submandibular
• Submental
• Superficial cervical
• Anterior cervical