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"Blood Circulation" PPT download
Part One: Learning Objectives
1. Distinguish between arteries, veins and capillaries, explain the functions of different types of blood vessels, and their structural characteristics suitable for their functions.
2. Describe the structure and function of the heart, and explain the characteristics of the heart and its functions.
3. Describe the pathways of blood circulation, briefly describe the changes in blood components during blood circulation, and explain the significance of blood circulation in the human body.
Scenario import
Blood circulation refers to the circulatory flow of blood in the heart and blood vessels throughout the body. Why can blood flow continuously in a certain direction? This is determined by the heart and blood vessels, which are the components of the blood circulation system.
Blood circulation PPT, part 2 content: classroom activities
Activity: Use a microscope to observe various blood vessels
Purpose requirements:
Identify different types of blood vessels and describe the structural characteristics of each type of blood vessels.
Materials and tools:
Microscope. Human or mammalian blood vessel sections. Capillary mounts
Method steps:
1. Observe the cross-section of blood vessels under a microscope, and distinguish and compare the differences in wall structure of arteries and veins.
2. Observe capillary loading.
discuss:
How the structural characteristics of different blood vessels adapt to their respective kinetic energies.
Blood circulation PPT, part 3 content: classroom demonstration
Demo Observe the Heart
Method steps:
1. Observation of the shape of the heart:
Identify the up, down, left, right, front and back positions of the heart.
Pinch the atrial and ventricular walls to feel the thickness of the walls.
2. Observation of the internal structure of the heart:
Identify the four cavities
Observe the connection relationship between the four cavities
Find the blood vessels connected to the four chambers
Blood circulation PPT, part 4: compliance testing
1. Distributed in the deep layers of the body, the tube wall is thick and elastic, and the blood flow speed in the tube is fast ( )
A. arteries B. veins
C. Capillaries D. Arteries and veins
2. Which of the following statements about capillaries is incorrect ( )
A. Large in number and widely distributed in the human body; it is the place where blood and tissue cells exchange substances.
B. The tube wall is extremely thin, consisting of only one layer of epithelial cells, and the blood flow in the tube is extremely slow.
C. is a blood vessel that connects the smallest arteries and veins
D. Its inner surface has valves that prevent blood from flowing back
3. The most developed part of the heart muscle is ( )
A. Left atrium B. Right atrium C. Left ventricle D. Right ventricle
4. The power organ of blood circulation is ( )
A. arteries B. veins C. capillaries D. heart
5. The blood vessel connected to the right atrium of the heart is ( )
A. Pulmonary vein B Superior and inferior vena cava C. Aorta D. Pulmonary artery
Keywords: Beijing Normal University Edition Biology PPT courseware for seventh grade volume 2 free download, blood circulation PPT download, .PPT format;
For more information about the PPT courseware "Material Transport and Blood Circulation in the Human Body", please click the Material Transport and Blood Circulation in the Human Body ppt tag.
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"Human Blood Circulation" PPT:
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"Blood Circulation" PPT courseware:
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