LYMPHATIC SYSTEMPresented by Burçin Gümüş

LYMPHATIC SYSTEM Consists of a network of

- lymph vessels

- lymph nodes

- lymph

WHY DO WE NEED LYMPHATIC SYSTEM ? Has 2 important functions

First, talk about interstitial fluid

FUNCTION - 1 Collects interstitial fluid (oedema) Returns tissue fluid back to the circulatory system

LYMPH VESSELS

LYMPH VESSELS Have valves Close- ended Muscle contraction

LYMPH NODES Filter the lymph before return back to the circulatory

system Contain large numbers of lymphocytes and

macrophages Fight infections ( Function -2) Enlarge in infection

LYMPH NODES You can feel your lymph nodes,

- under your arm, in your armpits

- in each groin (at the top of your legs)

- in your neck (tonsils)

OTHER LYMPHATIC SYSTEM ORGANS Spleen Thymus Tonsils Adenoids

LET’S COMPARECIRCULATORY SYSTEM LYMPHATIC SYSTEM

Blood Lymph

Flows toward the heart and away from the heart

Flows only one direction ( towards the heart)

Blood is pumped by the heart  to all parts of the body

Lymph is not pumped. It passively flows from the tissues into the lymph capillaries.

Blood flows in the arteries, capillaries, and veins

Lymph flows in an open circuit from the tissues into lymphatic vessels.

Blood is filtered by the kidneys. Lymph is filtered by lymph nodes located throughout the body

Blood consists of the liquid plasma that transports the red and white blood cells and platelets

Lymph that has been filtered and is ready to return to the cardiovascular system is a clear or milky white fluid

LET’S REVISE… http://www.youtube.com/watch?v=Kh-XdNnTZUo