Download Circulatory System

Cardiovascular
System
Cardiovascular System
Cardio = “heart”
 Vascular = “vessels”

Circulatory (Cardiovascular)
System

Made up of heart, vessels, and blood
Three Types of Blood Vessels
 Arteries
- move
blood away from
the heart
Three Types of Blood Vessels
Arteries - move blood
away from the heart
 Veins - move blood
toward the heart

Three Types of Blood Vessels
Arteries - move blood away from the heart
 Veins - move blood toward the heart
 Capillaries tiny blood
vessels that connect
arteries and veins

Functions of the Blood

Carries oxygen from lungs
to all body cells and
removes carbon dioxide
from the cells
Red blood cell
White blood cell
Functions of the Blood

Red blood cells – contain hemoglobin
which combines with oxygen. These
cells deliver oxygen to the body.

Their disc shape helps them squeeze
through vessels.

They wear out and are replaced
every four months. New red blood
cells are produced in the bone
marrow.
Red blood cell
Functions of the Blood

Carries waste products of cell activity to
the kidneys to be removed from the body
Functions of the Blood

Transports nutrients from the digestive
system to body cells
Functions of the Blood

Materials in the blood help fight infection
and heal wounds (white blood cells and
platelets).
White blood cell: fights
foreign invaders
Platelets: help
blood form clots
Functions of the Blood

White blood cells – are generally larger than red
blood cells. They can move out of your blood
through the capillary walls into tissue fluid and
lymph.

They then travel around fighting disease. The
white blood cells last 13–20 days, after which
they are destroyed by the lymphatic system.
White blood cell: fights
foreign invaders
Functions of the Blood

Platelets – are irregularly-shaped, colorless
bodies that wear out within 5–10 days

Their sticky surface lets them, along with
calcium, vitamin K, and fibrinogen, form clots to
stop bleeding.
Platelets: help
blood form clots
Which two substances does the blood
transport away from body cells?
1.
2.
3.
4.
Oxygen & carbon
dioxide
Carbon dioxide &
waste
Nutrients & waste
Oxygen &
nutrients
What parts of the blood help fight
off disease and heal injuries?
1.
2.
3.
4.
White blood cells
& platelets
Red blood cells &
platelets
White blood cells
& red blood cells
White blood cells
& plasma
Which is not a function of the
circulatory system?
1.
2.
3.
4.
Carry nutrients &
oxygen to body cells
Carry carbon dioxide &
waste away from body
cells
Attack disease-causing
bacteria
Produce chemicals that
control body processes