Transcript The Lymphatic System

The Lymphatic System
By: Rachel McConnell and Hope Uzbalis
What is the Lymphatic System?
The Lymphatic System is a subsection of
the Circulatory System that transports a
fluid called lymph from the tissues back
to the bloodstream, while cleaning the
tissues and removing pathogens along
the way.
Functions of The Lymphatic System
1. Immune System: Removes foreign material
from the body via lymph nodes and develops
immune cells (lymphocytes)
2. Fluid Balance: Returns excess fluid to the
cardiovascular system
3. Fat Transport: Transports absorbed fats from
small intestine to the liver
What is Lymph and How is it Moved
Through Lymphatic Vessels?
The lymph moves in only
one direction; upwards
towards the subclavian
veins in the neck. Valves in
the vessels prevent
backflow of lymph.
Components of The Lymphatic System
Organ
Function
Lymph
A clear, water-like liquid
that transports nutrients,
oxygen, hormones, and
fatty acids, as well as
toxins and other cellular
waste products.
Lymphatic vessels
Transport lymph from all
regions of the body to the
cardiovascular system via
lymph ducts into the
subclavian veins.
Bone Marrow and Peyer’s
Patches
Site of B-lymphocyte
maturation.
Tonsils and Adenoids
Contain T and B cells that
help provide protection
from harmful substances
entering the body.
Thymus
Serves as the site of Tlymphocyte maturation,
development, and control
Spleen
Filters blood, is the location
of pathogen engulfment
and eradication, the
immunologic response, and
the regulation site.
Lymph nodes
Small, bean-shaped
structures that make and
store lymphocytes that fight
infection and disease, filter
lymph, and initiate an
immune response.
What Happens in the Lymph Node?
Lymphatic System and Cancer
Lymphatic System and Cancer
Continued
Staging
System:
T - Tumor
N - Nodes
M - Metastases
Lymph Nodes become
overwhelmed by caught cancer
cells and soon become cancerous.
This can indicate how far the
cancer has spread and the stage
the cancer is in.
THE END!!!
Quiz
Time!
1. Spleen
2. Lymph
A. Serves as the site
of T-lymphocyte
maturation,
development, and
control
C. Filters blood, is the
location of pathogen
engulfment and
eradication, the
immunologic response,
and the regulation site.
3.Thymus
4. Lymph
nodes
5. Bone
Marrow and
Peyer’s
Patches
B. A clear,
water-like
liquid that
transports
nutrients,
oxygen,
hormones, and
fatty acids, as
well as toxins
and other
cellular waste
products.
D. Small, bean-shaped
structures that make and
store lymphocytes that
fight infection and
disease, filter lymph, and
initiate an immune
response.
E. Site of Blymphocyte
maturation.
Spleen
Lymph
Serves as the site of
T-lymphocyte
maturation,
development, and
control
Filters blood, is the location
of pathogen engulfment
and eradication, the
immunologic response,
and the regulation site.
Thymus
Lymph
nodes
Bone
Marrow and
Peyer’s
Patches
A clear, waterlike liquid that
transports
nutrients,
oxygen,
hormones, and
fatty acids, as
well as toxins
and other
cellular waste
products.
Small, bean-shaped
structures that make and
store lymphocytes that
fight infection and
disease, filter lymph, and
initiate an immune
response.
Site of Blymphocyte
maturation.
Question
 What are the three main functions of the lymphatic system?
Answer
 transport fat
 return excess fluid to the
cardiovascular system
 immune response against foreign
material
Question
 What system is used to diagnose cancer
severity?
Answer
 TNM (number of tumours, nodes
affected, and number of metastases)
Question
 What is one structure that a lymph
node uses to slow lymph flow?
Answer
 trabeculae
 Hilum
 efferent lymphatic vessel (s)
 reticular fibres