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The Circulatory System. Warm Up:  OBJ/HW/WU on page 108  Read the Circulatory System Poem  Answer in your notebook:  How is the circulatory system.

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Presentation on theme: "The Circulatory System. Warm Up:  OBJ/HW/WU on page 108  Read the Circulatory System Poem  Answer in your notebook:  How is the circulatory system."— Presentation transcript:

1 The Circulatory System

2 Warm Up:  OBJ/HW/WU on page 108  Read the Circulatory System Poem  Answer in your notebook:  How is the circulatory system like a highway? Use a few examples from the poem.

3 Function  Transportation system by which oxygen and nutrients reach the body's cells, and waste materials are carried away.  Also carries substances called hormones, which control body processes, and antibodies to fight invading germs.

4 Circulatory System Works with….  Digestive System ~ breaks down food and nutrients  Respiratory System  ~ provides oxygen that cells need to release energy  Transports materials from the digestive system and the respiratory system to the cells

5 Parts of the Circulatory System  Divided into three major parts:  The Heart  The Blood  The Blood Vessels

6 The heart, the lungs, and the bloo d vessels work together to form the the circulatory system.

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8 3 Types of Circulation:  Pulmonary circulation  Coronary circulation  Systemic circulation

9 Pulmonary Circulation Movement of blood from the heart, to the lungs, and back to the heart again

10 sln.fi.edu/biosci/systems/ pulmonary.html

11 Coronary Circulation Movement of blood through the tissues of the heart

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13 Systemic Circulation Supplies nourishment to all of the tissue located throughout the body, except for the heart and lungs

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15 Blood Vessels Hollow tubes that circulate your blood

16 Three Types of Blood Vessels  Arteries  Veins  Capillaries

17 Arteries  Carry blood AWAY from the heart  Heart pumps blood  Main artery called the aorta  Aorta divides and branches  Each region of your body has system of arteries supplying it with fresh, oxygen-rich blood.

18 Arteries  Tough on the outside  Smooth on the inside  Muscular wall helps the heart pump blood

19 Have strong, muscular walls The inner layer is very smooth so that the blood can flow easily

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21 Capillaries  Very thin  Only one cell thick  Connect arteries & veins

22 Capillaries  Food and oxygen released to the body cells  Carbon dioxide and other waste products returned to the bloodstream

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24 w3.uokhsc.edu

25 Valves are located inside the veins. The valves only allow blood to move in one direction.

26 Veins  Carry blood to the heart  Receive blood from the capillaries  Transport waste-rich/ oxygen-poor blood back to the lungs and heart  Valves are located inside the veins  Allow blood to move in one direction

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28 Close up of heart valve Heart sounds are made by the valves as they open and close

29 Blood  Pumped by your heart.  Travels through thousands of miles of blood vessels  Carries nutrients, water, oxygen and waste products to and from your body cells.  Made up of liquids, solids and small amounts of oxygen and carbon dioxide.

30 Red Blood Cells  Red blood cells carry oxygen from the lungs to all the cells of the body.  Takes carbon dioxide and transports it back to the lungs  About 5,000,000 Red Blood Cells in ONE drop of blood.  Made in red bone marrow  Circulate for 120 days

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32 White Blood Cells  White blood cells protect the body from germs  Guard against infection, fight parasites, and attack bacteria  Number of WBC’s increases when body is fighting

33 scienceu.fsu.edu illus/167i2.htm

34 Platelets  Platelets are blood cells that help stop bleeding  Forms a net-like structure for clotting

35 user.gru.net/clawrence/ vccl/chpt7/plate.htm

36 Plasma  Plasma is the liquid part of the blood  About half of your blood is made of plasma  The plasma carries the blood cells throughout the body 10% dissolved gases, salts, nutrients, enzymes, hormones, wastes, and proteins.  90% water  Plasma is made in the liver.

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38 Label the Parts of the Heart Oxygenated blood is moving AWAY from the heart (color red) Deoxygenated blood is moving TO the heart (color blue)


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