Chapter 21, Problem 11CYU

Summary Introduction

To review:

The layers of embryo from which the thymus, the tonsils, the spleen, and the lymph nodes are derived.

Introduction:

The lymphatic system is associated with the collection and filtration of the lymph and then, draining it into the blood circulation. The structures of the lymphatic system are present throughout the body. Some of the lymphatic structures are developed before birth and some after birth. The lymphatic structures are derived from the embryonic layers.