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Circulation The Bodys Transport System A Closer Look at Blood Vessels Blood and Lymph Cardiovascular Health Table of Contents.

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Presentation on theme: "Circulation The Bodys Transport System A Closer Look at Blood Vessels Blood and Lymph Cardiovascular Health Table of Contents."— Presentation transcript:

1 Circulation The Bodys Transport System A Closer Look at Blood Vessels Blood and Lymph Cardiovascular Health Table of Contents

2 Circulation - The Bodys Transport System The Cardiovascular System The cardiovascular system carries needed substances to cells and carries waste products away from cells. In addition, blood contains cells that fight disease.

3 Circulation - The Bodys Transport System The Heart The heart is a hollow, muscular organ that pumps blood throughout the body. The right side of the heart is completely separated from the left side by a wall of tissue called the septum. Each side has an upper chamber, or atrium, and a lower chamber, or ventricle.

4 Circulation Heart Activity Click the Active Art button to open a browser window and access Active Art about the heart. - The Bodys Transport System

5 Circulation - The Bodys Transport System The Heart As blood flows out of the heart and toward the lungs, it passes through a valve like the one here.

6 Circulation - The Bodys Transport System Two Loops Blood circulates through the body in two loops, with the heart at the center. In the first loop, blood travels from the heart to the lungs and then back to the heart. In the second loop, blood is pumped from the heart throughout the body and then returns to the heart.

7 Circulation Sequencing As you read, make a cycle diagram like the one below that shows the path that blood follows as it circulates throughout the body. Write each step of the pathway in a separate circle. Pathway of Blood Right side of heart Lungs Left side of heart Body - The Bodys Transport System

8 Circulation End of Section: The Bodys Transport System

9 Circulation - A Closer Look at Blood Vessels Blood Vessels The walls of arteries and veins have three layers. The walls of capillaries are only one cell thick.

10 Circulation Calculating a Rate A rate is the speed at which something happens. When you calculate a rate, you compare the number of events with the time period in which they occur. Heres how to calculate the pulse rate of a person whose heart beats 142 times in two minutes. 1. Write the comparison as a fraction: 2. Divide the numerator and the denominator by 2: The persons pulse rate is 71 heartbeats per minute. - A Closer Look at Blood Vessels

11 Circulation Calculating a Rate Practice Problem Calculate your pulse rate if your heart beats 170 times in 2.5 minutes. 68 beats per minute - A Closer Look at Blood Vessels

12 Circulation - A Closer Look at Blood Vessels Artery and Vein In this photo, you can compare the wall of an artery with the wall of a vein.

13 Circulation Blood VesselFunctionStructure of Wall Comparing and Contrasting As you read, compare and contrast the three kinds of blood vessels by completing a table like the one below. Artery Carries blood away from the heart Thick wall consisting of three cell layers with thick muscle in the middle layer Capillary Exchange of materials between the blood and body cells Thin walls consisting of one cell layer Vein Carries blood back to the heart Thick walls consisting of three cell layers with thin muscle in the middle layer - A Closer Look at Blood Vessels

14 Circulation End of Section: A Closer Look at Blood Vessels

15 Circulation - Blood and Lymph Blood Blood consists of liquid plasma and three kinds of cellsred blood cells, white blood cells, and platelets.

16 Circulation - Blood and Lymph Blood Types The marker molecules on your red blood cells determine your blood type and the type of blood that you can safely receive in transfusions.

17 Circulation Blood Type Distribution The circle graph shows the percentage of each blood type found in the U.S. population. - Blood and Lymph

18 Circulation Blood Type Distribution The percentage of each blood type found in the United States population Reading Graphs: What does each edge of the graph represent? - Blood and Lymph

19 Circulation Blood Type Distribution AB (4%), B (11%), A (40%), O (45%) Interpreting Data: Rank the four major blood typesA, B, AB, and O from least common to most common. What is the percentage of each type? - Blood and Lymph

20 Circulation Blood Type Distribution 84%; 16% Calculating: According to the graph, what percentage of the population is Rh positive? What percentage is Rh negative? - Blood and Lymph

21 Circulation Blood Type Distribution O negative or B negative blood; 9% Predicting: What type of blood can someone who is B negative (blood type B and Rh negative) receive? What percentage of the population does that represent? - Blood and Lymph

22 Circulation Blood Type Distribution The data should be arranged in three columns and eight rows. Creating Data Tables: Use the data to make a table of the eight possible blood types. Include columns for the A, B, AB, and O blood types; Rh factor (positive or negative); and percentage of the population. - Blood and Lymph

23 Circulation - Blood and Lymph The Lymphatic System The lymphatic system is a network of veinlike vessels that returns the fluid to the bloodstream.

24 Circulation Identifying Main Ideas As you read the section titled Blood, write the main idea in a graphic organizer like the one below. Then write four supporting details that give examples of the main idea. Blood is made up of four components. Plasma is the liquid part of blood. Red blood cells take up oxygen and deliver it to cells in the body. White blood cells fight disease. Main Idea Platelets help form blood clots. Detail - Blood and Lymph

25 Circulation Blood Click the Video button to watch a movie about blood. - Blood and Lymph

26 Circulation Links on Blood Click the SciLinks button for links on blood. - Blood and Lymph

27 Circulation End of Section: Blood and Lymph

28 Circulation Asking Questions Before you read, preview the red headings. In a graphic organizer like the one below, ask a what or how question for each heading. As you read, write answers to your questions. What are some cardiovascular diseases? Cardiovascular diseases include atherosclerosis and hypertension. How can a person keep healthy? Exercise regularly, eat a healthy diet, and avoid smoking. Question Answer Cardiovascular Health - Cardiovascular Health

29 Circulation Links on Cardiovascular Problems Click the SciLinks button for links on cardiovascular problems. - Cardiovascular Health

30 Circulation End of Section: Cardiovascular Health

31 Circulation Graphic Organizer Loop Right side Loop One Loop Two Side of Heart Where Loop Starts Where Blood Flows to Where Blood Returns to Left side LungsLeft atrium BodyRight atrium

32 Circulation End of Section: Graphic Organizer


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