Blood vessels and circulation

1. Blood
Vessels
Presented by:-
Jaineel Dharod

2. Vascular System: blood circulates inside closed
transport systems
Types of Blood Vessels:
• Arteries (takes blood away from heart)
• Arterioles
• Capillary beds
• Venules
• Veins (return blood back to heart)

3. ANATOMY OF BLOOD VESSELS
Three coats (tunics):
1. Tunica intima: endothelium lines the interior of
vessels; decreases friction as blood flows
2. Tunica media: smooth muscle & elastic tissue
(dilates & constricts vessels)
3. Tunica externa: fibrous connective tissue on
outside supports and protects vessels

10. THE DOUBLE CIRCULATION SYSTEM
• The heart has a double circulation
system. The pulmonary circuit pumps
blood to the lungs and the systemic
circuit pumps blood to the body systems.
This system separates the oxygenated
and the deoxygenated blood. The right
ventricle pumps blood through the
shorter pulmonary circuit while the left
ventricle pumps blood through the
longer systemic circuit. As a result, the
left ventricle's walls are thicker and
stronger.

11. • The Systemic System can be divided into
THREE SUBSYSTEMS:
A. Coronary Circulation: supplies blood to
the heart.
B. Renal Circulation: Supplies blood to the
kidneys. Nearly one-forth of the blood that is
pump into the Aorta by the Left Ventricle
flows to the Kidneys. The Kidneys Filter
Waste From the Blood.
C. Hepatic Portal Circulation: Nutrients are
picked up by capillaries in the small intestines
and are transported to the Liver. Excess
nutrients are stored in the Live for future
needs. The Liver receives oxygenated blood
from a large Artery that branches of the Aorta.

12. Imagine you are a red blood cell
(RBC). List the pathway you would
travel through the body in a
complete circuit.