Download Heart Structure Heart Structure Heart Structure Heart Structure Heart

3/27/2017
Parts of the
circulatory system
include:
• Heart
• Blood
• Blood Vessels
Heart Structure
From UPPER Body
1. Where is the ATRIUM
located and what does it do?
To RIGHT Lung
PULMONARY
ARTERY
VENA CAVA
The ATRIA make up the upper
chambers of the heart and RECIEVE
blood from the body.
To LEFT Lung
Heart Structure
Define MYOCARDIUM:
A muscle layer of the heart responsible for contracting and pumping
blood through the circulatory system.
Heart Structure
To UPPER Body
1. Where is the ATRIUM
located and what does it do?
From LEFT Lung
PULMONARY
VEINS
Right
Atrium
The ATRIA make up the upper
chambers of the heart and RECIEVE
blood from the body.
VENA CAVA
From LOWER Body
Heart Structure
From UPPER Body
2. Where is the VENTRICLE located
and what does it do?
To RIGHT Lung
The VENTRICLES make
up the lower chambers
of the heart and PUMPS
blood out of the heart.
Right
Ventricle
VENA CAVA
From LOWER Body
From LEFT Lung
Left
Atrium
PULMONARY
VEINS
AORTA
To LOWER Body
PULMONARY
ARTERY
VENA CAVA
To LOWER Body
AORTA
To LEFT Lung
Heart Structure
To UPPER Body
2. Where is the VENTRICLE
located and what does it do?
AORTA
From LEFT Lung
The VENTRICLES make
up the lower chambers
of the heart and PUMPS
blood out of the heart.
To LOWER Body
From LEFT Lung
PULMONARY
VEINS
PULMONARY
VEINS
Left
Ventricle
AORTA
To LOWER Body
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Heart Structure
AORTA
3. What is the function of the heart
VALVES?
Heart valves are located between
the atria and the ventricles and
allow ONE-WAY FLOW from the
atria to the ventricles. Valves also
exist at the exits of each ventricle.
Heart Structure
Define SEPTUM:
PULMONARY
ARTERY
VENACAVA
Pulmonary
Aortic
Tricuspid
Mitral
A wall that separates the right
side of the heart from the left
side preventing oxygen-rich
blood from mixing with oxygenpoor blood.
VENACAVA
AORTA
Pulmonary Circulation
• The circulation of oxygen-poor blood from the right side of
the heart to the lungs.
Systemic Circulation
• The circulation of oxygen-rich blood from the left side of
the heart to the rest of the body.
Coronary Circulation
• The circulation of blood in the blood vessels of the heart
muscle (myocardium).
Circulation
2. Describe Systemic circulation:
a. From the left side of the heart, where does the blood go?
The blood travels from the left side of the heart to the rest of the body.
b. Is the blood oxygen-rich or oxygen-poor?
The blood is oxygen-rich.
c. What is exchanged between the blood cells and body cells?
Body cells absorb much of the oxygen and load the blood with
CO2 and other waste.
d. Once the exchange has taken place, where does the blood go?
This now oxygen-poor blood returns to the right side of the
heart for another trip to the lungs to pick up oxygen.
Circulation
1. Describe pulmonary circulation:
a. From the right side of the heart, where does the blood go?
The blood travels from the right side of the heart to the lungs.
b. Is the blood oxygen-rich or oxygen-poor?
The blood is oxygen-poor.
c. Once the blood is in the lungs, what happens to the blood?
Carbon diffuses from the blood, and oxygen is absorbed by the
blood.
d. After leaving the lungs, is the blood oxygen-rich or oxygen-poor?
Oxygen-rich blood then flows to the left side of the heart.
Define ARTERY:
• Large vessels that carry
blood away from the heart
to the tissues of the body. All
arteries carry oxygen-rich
blood EXCEPT the
PULMONARY ARTERY.
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Define CAPILLARY:
• small blood vessels with
thin walls that allow
oxygen and nutrient
exchange with CO2 and
other waste products.
What do veins do?
• After blood passes
through the capillaries,
veins carry oxygen-poor
blood back to the heart.
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