The Circulatory System

The Circulatory System
Unit 8

New Area of Focus: The Circulatory System

Circulatory System: Delivers food and oxygen to the body and carries carbon dioxide and other waste products away. “Also called the cardiovascular system.”

Don’t forget the lungs, they’re a huge part!
Circulatory System: Delivers food and oxygen to the body and carries carbon dioxide and other waste products away. “Also called the cardiovascular system.” Don’t forget the lungs, they’re a huge part!

Consists of the following
-

Heart

Heart Blood Vessels

and Lungs Consists of the following Heart, lungs Blood Vessels Blood
Copyright © 2010 Ryan P. Murphy

The function of the circulatory system.
-

To deliver food and oxygen to cells. -

To deliver food and oxygen to cells. To carry away waste. - CO2

Don’t forget the lungs The function of the circulatory system.
To deliver food and oxygen to cells. To carry away waste. - CO2 Don’t forget the lungs

To deliver food and oxygen to cells. To carry away waste. To aid in disease prevention. -

To deliver food and oxygen to cells. To carry away waste. To aid in disease prevention. To deliver chemical messages (hormones).

The left side of the heart is on the left side of your body.
When you look at it on paper it’s the on the right side. Right Left Copyright © 2010 Ryan P. Murphy

Lightly shade blue and red
Heart Song while you shade the left side red and right side blue (LORD) (3 min) Copyright © 2010 Ryan P. Murphy

Superior Vena Cava Inferior Vena Cava From Body

Superior Vena Cava Right Atrium CO2 Inferior Vena Cava From Body

Superior Vena Cava Right Atrium CO2 Inferior Vena Cava Tricuspid Valve
From Body Right Atrium CO2 Inferior Vena Cava Tricuspid Valve Copyright © 2010 Ryan P. Murphy

Tri=3 Superior Vena Cava Right Atrium CO2 Inferior Vena Cava
From Body Right Atrium CO2 Inferior Vena Cava Tri=3 Tricuspid Valve Copyright © 2010 Ryan P. Murphy

Lungs aren’t far away

OXYGENATED! NOW Superior Vena Cava Right Atrium CO2 Inferior Vena Cava
To Lungs Semilinuar Valves Superior Vena Cava OXYGENATED! NOW From Body Right Atrium CO2 Inferior Vena Cava Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

Superior Vena Cava Right Atrium CO2 Left Atrium O2 Inferior Vena Cava
To Lungs Semilinuar Valves Superior Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

Superior Vena Cava Right Atrium CO2 Left Atrium O2 Inferior Vena Cava
To Lungs Semilinuar Valves Superior Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

Left Ventricle Superior Vena Cava Right Atrium CO2 Left Atrium O2
To Lungs Semilinuar Valves Superior Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

PUMP Left Ventricle Superior Vena Cava Right Atrium CO2 Left Atrium O2
To Lungs Semilinuar Valves Superior Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) PUMP Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

Question? Which side of your heart needs to work harder? Why?
Right Left Copyright © 2010 Ryan P. Murphy

To Lungs Semilinuar Valves Superior Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

To Lungs Semilinuar Valves Superior Artioventricular valve Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

Aorta Left Ventricle Superior Vena Cava Right Atrium CO2
To Lungs Semilinuar Valves Aorta Superior Artioventricular valve Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

To Body To Lungs Semilinuar Valves Aorta Superior Artioventricular valve Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

To Body High Blood Pressure To Lungs Semilinuar Valves Aorta Superior Artioventricular valve Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

To Body High Blood Pressure To Lungs Semilinuar Valves Aorta Superior Low Blood Pressure Artioventricular valve Vena Cava Pulmonary Veins From Body Right Atrium CO2 Left Atrium O2 Inferior Vena Cava Mitral Valve (Bicuspid) Left Ventricle Tricuspid Valve (Pump) Right Ventricle Copyright © 2010 Ryan P. Murphy

Artery: Blood vessel that carries blood away from heart.

Capillary: Extremely thin walled blood vessel.

Vein: Blood vessel that carries blood to the heart.

Blood: A specialized bodily fluid that delivers necessary substances to the body's cells.

Blood: A specialized bodily fluid that delivers necessary substances to the body's cells.
Such as nutrients and oxygen – and transports waste products away from those same cells. Copyright © 2010 Ryan P. Murphy

Blood is made up of… -

Blood is made up of… Red Blood Cells -

Blood is made up of… Red Blood Cells White Blood Cells -

Blood is made up of… Red Blood Cells White Blood Cells Platelets -

Blood is made up of… Red Blood Cells White Blood Cells Platelets
Plasma

Plasma: Fluid of blood, 90% water, 10% sugars, fats, salts, gases, and proteins.
Controls amount of water in blood. Has antibody proteins that fight off disease. Blood clotting agents. Carries chemical messages (hormones) Carries waste products

Red Blood Cells (Erythrocytes): Produced in bone marrow, no nucleus in cell (mature cell), delivers oxygen to cells, carries away CO2. Hemoglobin: Iron containing pigment in RBC (which give them red color. Hemoglobin helps blood bind with oxygen and carbon di oxide)

White Blood Cells (Leucocytes): Circulate throughout the body providing protection against foreign organisms and matter.

Platelets (Thrombocytes): Irregularly shaped bodies with sticky surfaces that form clots to stop bleeding.

Diseases and disorders of the cardiovascular system

Diseases and Disorders of the Cardiovascular System
Myocardial infarction: Commonly called a heart attack. It is due to the blockage of an coronary artery which supplies the myocardium. The cardiac muscle dies and the heart doesn’t function properly because of this. It can be due to the formation of deposits of cholesterol and lipids called plaques, blood clots called thrombus, or an embolism which is a blood clot that forms somewhere else in the body, breaks free and lodges in a coronary artery stopping the flow of blood

Atherosclerosis: commonly called “hardening of the arteries”. The arteries begin to loose their elasticity due to aging and the formation of plaques in their walls. They narrow and reduce blood supply to regions of the body particularly the brain and heart.

Aneurysm: An aneurysm is a weakened area within the wall of an artery or arteriole. Because of the high pressure, the vessel wall balloons out and can rupture when the wall becomes stretched too thin. This leads to a serious internal hemorrhage.

Arrhythmia: Arrhythmia is due to the irregular beat of the heart. It may be due to damage to the SA or AV node, or the myocardium itself. It is commonly treated with medications or by the implantation of an artificial pace-maker.

Different kinds of arrhythmia: Bradycardia indicates that the heart is beating too slow Tachycardia indicates the heart is beating too fast.

Diseases and Disorders of the Blood
Hemophilia: A genetic disorder that is due to the fact that there is a clotting factor missing necessary for clot formation to stop bleeding. These individuals can bleed to death from simple injuries or bruising of the body. The most prevalent form is more common in males than females because it is carried on the X chromosome of the female (sex-linked).

Leukemia: cancer of the bone marrow which produces blood cells. There are many different forms of this disease depending upon which type of blood stem cells are involved. However, the cells typically do not mature and inhibit the production of other types of blood cells necessary for survival. Normal Bone Marrow AML Bone Marrow

Anemia: Anemia is due to the lack of erythrocytes or low levels of hemoglobin in erythrocytes, or abnormal erythrocytes (sickle cell). This inhibits the proper transport of oxygen in the body. There are several forms of anemia

The Circulatory System

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