Explain the functional significance of the lymphatic system.

(N/A) The lymphatic system plays several critical roles in maintaining body homeostasis:
$1$. Fluid Balance: It collects excess interstitial fluid from tissues and returns it to the blood circulatory system,preventing edema.
$2$. Absorption of Fats: In the small intestine,specialized lymphatic capillaries called $Lacteals$ are responsible for the absorption and transport of dietary fats and fat-soluble vitamins.
$3$. Immune Defense: Lymph nodes act as filters,trapping pathogens,debris,and foreign particles. They contain lymphocytes ($B$-cells and $T$-cells) that initiate immune responses to protect the body against infections.
$4$. Waste Removal: It assists in the removal of metabolic waste products and cellular debris from the interstitial spaces.