Download Cardiovascular System

February
Learning Target
 I will continue to work to
identify the function of
the circulatory system by
viewing models and
animations

WHY? So I can dig
deeper into the human
body
th
17
2016
Warm up
 In your opinion: What do
you think the “lub dub” is
in your heartbeat? Do you
think blood can move
away in veins and
towards the body in
arteries? What do you
think would happen if we
didn’t have veins or
arteries?
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 microscopic 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