UNIT 3
The Circulatory System
Mr. Scisly
6th Grade Health
LESSON #1
WARM-UP ACTIVITY
1) What is the most important
muscle in the body?
Why?
2) What does the Circulatory System
do?
LESSON #1
GOALS
Today’s goal is to understand the function of
the circulatory and the importance of the
heart.
Circulatory System
Preview Video Questions
1) What does the blood transport that our
body needs?
2) What does the body transport that our body
needs to get rid of?
3) What result from eating a diet high in fat?
4) How does and an athlete’s heart differ from
a non-athlete’s heart?
Circulatory System
• What does it do?
• It carries needed substances to cells and
carries waste products away from cells.
Lesson #1
Guided Practice
• Work on the “Body’s Transportation
System” Handout in your group.
LESSON #2
WARM-UP ACTIVITY
Pre-Test:
ON YOUR OWN, try to label the parts of the
heart on the worksheet using the word bank.
LESSON #2
GOALS
By the end of the period today, you will be
able to label a heart diagram and also the
understand the functions of various parts
of the heart. (Atrium, Ventricle, Septum,
Valve, Pacemaker)
What Is the Heart?
• A Hollow Muscular organ that pumps blood
throughout the body.
The Parts of the Heart
• Septum- Thick muscular wall that separates the right
and left sides of the heart
• Atrium- Two upper collecting chambers of the heart
• Ventricles- Two lower pumping chambers of the heart
• Valve- A flap of tissue that prevents blood from
flowing backward
• Pacemaker- Located in the right atrium and sends out
signals that make the heart muscle contract
Lesson #2
Guided Practice
• In your group, check your diagram of the
heart and see if you labeled all of the parts
correctly. If some parts are incorrect, fix it.
LESSON #3
WARM-UP ACTIVITY
ON YOUR OWN, answer the following
question.
The blood travels through the body through
two loops. The right and left sides of the
heart are separate pumps. Where do they
pump the blood to?
LESSON #3
Goals
Today’s goal is to understand the path of
blood through the body.
By the end of the period today, you will be
able to label a diagram to demonstrate
your understanding of the path of blood.
The Path of Blood
• Two Types of Circulation
1) Pulmonary Circulation
2) Systemic Circulation
Pulmonary Circulation
•
•
•
•
•
•
•
Vena Cava
Right Atrium
Tricuspid Valve
Right Ventricle
Pulmonary Arteries
Lungs
Pulmonary Veins
Bicuspid
Valve
Systemic Circulation
•
•
•
•
•
Left Atrium
Bicuspid Valve
Left Ventricle
Aorta
Smaller and Smaller
Arteries
• Capillaries
• Veins
• Vena Cava
Bicuspid
Valve
Lesson #3
Guided Practice
• In your group, label the chart detailing the
Path of Blood.
LESSON #4
WARM-UP ACTIVITY
In your group, label the functions of the Right
Atrium, Left Atrium, Right Ventricle, and
Left Ventricle in your packet.
TRICUSPID
VALVE
ALL PARTS
OF THE BODY
THE PATH OF BLOOD
PULMONARY
ARTERIES
THROUGH THE BODY
BICUSPID
VALVE
PULMONARY
VEINS
LESSON #4
Goals
Today we will complete the following tasks:
1) Review the Path of Blood
2) Demonstrate an understanding of the
difference between the three types of
blood vessels
Chambers of the Heart
•
•
•
•
Right Atrium- Receives blood from the body.
The blood is low in oxygen and high in waste
products.
Right Ventricle- Pumps blood with low-oxygen
to the lungs
Left Atrium- Receives oxygen-rich blood from
the lungs
Left Ventricle- Pumps blood with high oxygen to
all parts of the body
Blood Vessels
• 3 Types
1) Arteries
2) Veins
3) Capillaries
Arteries
• Arteries- Blood vessels
that carry blood away
from heart
• Aorta- The largest blood
vessel in the body, carries
blood from the left
ventricle to the body
• Coronary Arteries- Blood
vessels that carry blood to
the heart itself
Pulse
• Heartbeats per minute
Veins
• Veins- Blood vessels
that carry blood back
to the heart
• Vena Cava- Largest
vein in the body,
returns oxygen poor
blood to the heart
Capillaries
• Capillaries- Blood
vessels where
materials are
exchanged between
the blood and body’s
cells
Sphygmomanometer
An instrument used to
measure blood
pressure.
Lesson #4
Guided Practice
EXIT SLIP
- On your note card, explain the difference
between veins, capillaries, and arteries.
**You may not use your books or notes!
LESSON #5
WARM-UP ACTIVITY
In your groups, answer the following questions:
What is blood pressure a measure of?
What is normal blood pressure?
What is a sphygmomanometer?
LESSON #5
Goals
Our goal today is to be able to identify and
define the parts of blood and also some
various diseases of the circulatory system.
4 Components of Blood
•
•
•
•
Plasma
Red Blood Cells
Platelets
White Blood Cells
Plasma
• Liquid Part of the Blood
Red Blood Cells
Take up oxygen and deliver it
to cells
White Blood Cells
The body’s disease fighters
Platelets
Play an important role in blood clots.
Lesson #5
Guided Practice
In your groups, use your book to find the
definitions for atherosclerosis, hypertension,
and heart attack. In addition, come up with
three ways to prevent heart problems.
*Pages 98-102 in the book*
Bicuspid
Valve