Lymphatic system - The body

Question 1

Lymphatic vessels

Answer 1

form an extensive and complex interconnected network of channels, which begin as “porous” blind-ended lymphatic vessels, which ultimately connect with large veins at the root of the neck.
Collect fluid lost from vascular capillary beds during nutrient exchange processes and deliver it back to the venous side of the vascular system.

Question 2

Lymph

Answer 2

clear and colorless fluid

Question 3

Chyle

Answer 3

opaque and milky fluid from the small intestine

Question 4

How does lymphatic fluid move through the lymphatic system?

Answer 4

Certain fats are absorbed and processed by the intestinal epithelium and are packaged into protein-coated lipid droplets called Chylomicrons that are released from the epithelial cells and enter the interstitial compartment, in combination with the interstitial fluid the chylomicrons drain into lymphatic capillaries (Lacteals) and are delivered to the venous system of the neck.

Question 5

Lymph nodes

Answer 5

Small (0.1-2.5cm long) encapsulated structures that interrupt the course of lymphatic vessels.
Contain elements of the body’s defense system ( like lymphocytes and macrophages).
Act as elaborate filters that trap and phagocytose particulate matter in the lymph that permeate through them.
Detects and defends against foreign antigens that are also carried in the lymph.
If infection occurs within a drainage area the node becomes active and cause a local inflammatory response; node enlarges and becomes tender
Cells that metastasized from primary tumors often enter lymphatic vessels often lodge and grow secondary tumors in lymph nodes.