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"Blood and Blood Type" PPT download
Part I: The stratification phenomenon of blood
Take 10 ml of fresh blood from a person, put it into a test tube containing a small amount of sodium citrate solution (to prevent blood coagulation), and let it sit for a while.
Take a look, what happens to the blood?
Think about it, what are the components of blood?
Ⅰ.Main components of plasma
Water (about 91% to 92%)
Protein (about 7%)
Glucose (about 0.1%)
Inorganic salts (about 0.9%)
Waste (small amount)
Ⅱ.Main functions of plasma
a. Carry blood cells;
b. Transport nutrients and waste.
Blood and blood type PPT, part 2: learning by knowledge points
hemoglobin
Red blood cells contain red hemoglobin, which gives blood its red color.
Hemoglobin is an iron-containing protein that easily combines with oxygen, so red blood cells have the function of transporting oxygen.
anemia
1. Iron deficiency: You should eat more foods rich in iron and protein. Such as: lean meat, fungus, kelp, etc.
2. Malnutrition: Mainly caused by lack of vitamin B12 and folic acid, so oral supplementation is enough.
Routine blood tests
Routine blood tests are often used as an auxiliary means for disease diagnosis. The main items checked include red blood cell count, white blood cell count, platelet count and hemoglobin content.
Doctors can initially determine the patient's condition by interpreting routine blood test data.
red blood cell count
Adult men: (4.0～5.5)×1012/L
Adult women: (3.5～5.0)×1012/L
Reduce: anemia, blood loss;
Increase: Polycythemia, pulmonary heart disease, congenital heart disease, severe dehydration and burns, etc.
White blood cell count
Adult: (5～10.0)x109/L
Reduce: typhoid fever, aplastic anemia, viral and protozoal infections, etc.;
Increase: acute infection, acute hemorrhage, acute poisoning, leukemia, late stage of various malignant tumors.
Blood and blood type PPT, part 3: blood donation
Will donating blood affect your own health?
Clinical practice and scientific research have led to the following conclusion: regular blood donation is more beneficial to health.
Practice has shown that people who insist on donating blood in an appropriate amount for a long time have significantly higher levels of fresh blood cells in their bodies than those who have not donated blood. They are more energetic and healthier.
As a healthy citizen, you should actively participate in voluntary blood donation and dedicate your love to saving the lives of others.
June 14th is “World Blood Donor Day”
Keywords: Jiangsu Education Edition seventh grade biology PPT courseware free download, blood and blood type PPT courseware, .PPT format;
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"Blood and Blood Type" PPT courseware:
"Blood and Blood Type" PPT Courseware Part One Content: Introduction of New Lesson In ancient times, the blood was used to recognize relatives, which means that if the blood of a child and the blood of an adult can be dissolved together, it is the biological child of the parents, otherwise it is not. Is it scientific to shed blood to identify a relative? Learning Objectives 1. Name the ABO blood type..
"Blood and Blood Type" PPT:
"Blood and Blood Type" PPT Part One Content: New Lesson Introduction Why does excessive blood loss lead to death? For patients who have lost excessive blood, why do they need timely blood transfusion instead of fluid infusion? Why can blood tests be used to check health conditions or diagnose diseases to a certain extent?