Download Circulatory System

 List the functions of the
circulatory and respiratory
systems.
I can identify the
components of the
circulatory system.
 The circulatory system is composted
of blood, blood vessels, lymphatic
system, and the heart.
 Together they serve as a
transportation system, where
materials are transported to and
from the cells.
 The fluid circulated
 through the circulatory system
by the heart.
 8 percent of the total weight of
an animal is blood.
 The blood is closed of plasma,
blood cells, and palates.
The fluid component of blood that
accounts for 50-60 percent of the bloods
volume.
 Plasma is approximately 90 water.
 The remaining 10 percent consist of
small amounts of digested food
nutrients, hormones, gases, and waste
products.

 Blood cells
are neither
red or white.
 Red blood cells or erythrocytes,
are formed in the red bone
marrow.
 These cells contain hemoglobin,
an iron containing protein.

Hemoglobin aids
in the transport of
oxygen and
carbon dioxide
and is responsible
for giving blood
its red color.
 White blood cells, or
leucocytes, are fewer in
number than the red blood
cells but are larger in size.
WHITE BLOOD CELLS





Have nucleus
Motile
Not confined to the
blood
Will move to areas of
inflammation to engulf
and destroy invading
organisms
YouTube - White Blood
Cell Chases Bacteria
RED BLOOD CELLS



No nucleus
Not motile
Confined to the blood
 Platelets are small and easily
damaged blood cells that occur in
large numbers in the blood.
 They attach themselves to injuries in
blood vessels of damaged tissue and
will release enzyme.
 The enzyme leads to the
formation of fibrinogen.
 Fibrinogen is the vital
component in the clotting of
blood
SYSTEMIC SYSTEM
PULMONARY SYSTEM
 Transports
 Transports
blood to all
body tissues
except the
lungs
blood to the
lungs and back
to the heart.

YouTube - Systemic and
Pulmonary Circulation
 There are three types of blood
vessels
 Arteries
 Capillaries
 Veins
Blood vessels that carry blood away
from the heart.
 Arteries carry oxygenated blood to body
tissues, except the pulmonary artery.
 Arteries divide into smaller branches
called arterioles.
 Arterioles carry blood to capillaries

Tiny blood vessels that connect arteries
with the veins.
 Nutrients and oxygen diffuse through
the capillary walls into body tissues.
 Carbon dioxide and other waste
products pass through the capillary walls
and are carried away from body tissue.

 Blood vessels that carry blood
toward the heart.
 Blood flow in veins is only
permitted to flow towards the
heart; this is controlled by valves
that open at regular intervals.
Consist of the lymph vessels, lymph
nodes, and lymph fluid, returns excess
lymph to the circulatory system.
 Lymph filters through the capillary walls
into the spaces between the cells to take
nutrients and hormones to cells to carry
waste products back to the circulatory
system.

 Lymph nodes filter out infectious
organisms such as bacteria and
viruses.
 Swollen lymph nodes are often a
sign of disease.
 The heart is the major organ of
the circulatory system.
 The heart consist of three layers,
the myocardium, endocardium,
and the epicedium.
 YouTube - Heart4