ILO’s
• Types of blood vessels and the differences between them
• Types of anastomosis between arteries and veins
• Main arteries of the body
• Main veins of the body
• The lymphatic system

The Lymphatic tissues

Lymphatic capillaries and vessels

Lymphatic ducts
Types of blood vessels:
Arteries
Veins
Capillaries
Varicose Veins
Types of anastomosis between
arteries and veins
1) Capillaries:
Small vascular connection between
small arterioles and small venules
in all organs
2) Direct A-V Shunt
Direct shunt between Arterioles and Venules
As in:
GIT, skin, fingers, toes, nose, lips and ears
Regulate Blood Flow
Regulate body temperature
Artificial A-V shunt for dialysis
3) Sinusoids
A wide tortuous vascular space lined with
phagocytes
Slow down Blood Flow allowing maximum
exchange of O2 and CO2 & Nutrients
Found in:
4) Cavernous (Erectile tissue)
Small vascular spaces filled with blood
Main Arteries in the Body
Ascending Aorta
Aortic Arch
Rt Common Carotid A
Rt Subclavian A
Brachiocephalic A
Lt Common Carotid A
Lt Subclavian A
Upper Limb Arteries
Radial Pulse
Superior Mesenteric A
Inferior Mesenteric A
Veins
Superficial and Deep veins
The Heart Veins drain in
Coronary Sinus
Veins of the Head and Neck Drain in
External Jugular vein
Rt Internal Jugular Vein
Rt Subclavian Vein
Lt Internal Jugular Vein
Lt Subclavian Vein
Lt Brachiocephalic Vein
Rt Brachiocephalic Vein
SVC Superior Vena Cava
Dorsal Venous Arch
Cephalic Vein
Basilic Vein
Median cubital Vein
Basilic Vein
Cephalic Vein
It is made up of 2
components:
Lymphatic tissue.
Lymphatic vessels.
They are formed of aggregation of
lymphocytes
They include:
They are vessels that pass
with the blood vessels but are
interrupted during their
passage by lymph nodes for
filtration.
They drain the interstitial
fluid to the systemic
circulation.
1.Lymph vessels return the intercellular
to the systemic
circulation.
2. Lymph vessels absorb and transport the
dietary lipid from the digestive system.
Fatty
acid
3. Lymphoid tissues form the
lymphocytes that produce
antibodies.
4. Lymphoid tissues filtrate the bacteria& other
injurious materials before entering the
circulation.
Final stations of the lymph vessels are
channels:
(trunk)
drains the right ½ of the head&
neck, thorax and the right upper
limb.
drain the rest of the body.
These two channels drain lymph into venous system
at the beginning of the
and
.
Sites lacking lymphatic as:
1.
2.
3.
Lymphadenitis
Lymphangitis
Assignment