What do you know about blood? GENERAL KNOWLEDGE TEST. See if you can do it! [QUIZ]

The exact amount of blood in the body depends on our weight. It is assumed that there is approximately 75 ml of blood per kilogram of body weight

Leukocytes, i.e. white blood cells, play a defensive role in the body. They constitute a barrier against infections and eliminate bacteria. They annihilate foreign proteins and are an important factor in the fight against parasites.

Division into blood groups is associated with the presence of characteristic proteins on red blood cells (erythrocytes), known as blood group antigens. The basic blood groups are: group 0 (no antigen on blood cells); group A (antigen A on blood cells); group B (antigen B on blood cells); group AB (both A and B antigens on blood cells).

Red blood cells live 100-120 days and are broken down in the liver and spleen.

Men usually have about 1 liter more blood than women

Blood cells are mainly produced in the bone marrow, but also in the spleen and lymph nodes.

The bright red color of blood indicates that it is oxygenated. The dark cherry color of the blood shows that it is deprived of oxygen and rich in metabolic products.

Platelets, or thrombocytes, are involved in blood clotting.

Blood flows faster in arteries than in veins, and the pressure in them is higher. This makes the walls of the arteries thicker and more flexible than the walls of the veins.

The AB group is the rarest blood group of all four types.

In addition, an honorary blood donor is entitled to a regenerative meal after donating blood or its components with a caloric value of 4.500 kcal; reimbursement of travel costs to the nearest blood donation point; in the case of announcing an epidemic threat or an epidemic, 33 percent relief in national transport (source: naszucks.org).

Blood owes its color to the presence of heme in erythrocytes. This compound together with globin forms hemoglobin. Thanks to it, blood carries several times more oxygen than it would be possible if oxygen was dissolved only in plasma.

The oldest blood group is blood group 0.

A person with blood group 0 is defined as a universal donor – blood transfusion does not cause any reaction in the recipient’s organism. The reason is that there are no antigens on the surface of group 0 cells.

Vitamin K is needed primarily in the liver synthesis of plasma blood coagulation factors and the protein – prothrombin. They are crucial when it comes to blood clotting – in the case of a deficiency of any of the factors, the blood does not clot at all or clots very slowly.

The weight of a blood donor candidate should exceed: for donors of blood or blood components: 50 kg; for donors donating two units of concentrated red blood cells: 70 kg.

Blood group A was created on the basis of blood group 0 at the time when primitive man began the stage of gathering and nomadism, agriculture developed, and the amount of eaten plants increased in the diet. Therefore, the digestive and digestive systems of people with blood group A are much better adapted to the processing and assimilation of protein, the source of which are legumes or fish.

Some diseases do not allow you to donate blood, and having them is tantamount to permanent disqualification. These diseases include: infectious jaundice (hepatitis B, hepatitis C) or any other unexplained form of jaundice, serious active or chronic cardiovascular diseases such as: heart defects, coronary artery disease, heart attack, post-heart attack, arrhythmias, in addition to fully healed congenital abnormalities, severe central nervous system disease, in particular, such as epilepsy, organic disorders of the nervous system, mental illness, recurrent syncope and seizures apart from childhood seizures (or if no recurrent convulsions), blood vessel diseases, such as: high degree of atherosclerosis, post-stroke condition, arterial diseases, recurrent phlebitis, active, chronic or recurrent respiratory system diseases, e.g. bronchitis, active bronchial asthma, active tuberculosis, active, chronic or recurrent diseases of the digestive system, such as, for example, chronic diseases gunki, acute and chronic liver diseases, post-gastric resection (removal), active, chronic or recurrent urinary tract diseases, active, chronic or recurrent skin diseases such as psoriasis, scleroderma, active, chronic or recurrent endocrine diseases and metabolic disorders, such as: hyperthyroidism and hypothyroidism (after thyroid surgery and while taking hormones), Graves’ disease, Cushing’s disease, etc., diabetes, active, chronic or recurrent systemic diseases, e.g. collagenosis, malignant neoplasms apart from cancer in situ, on condition of complete recovery, active, chronic or recurrent diseases of the blood and hematopoietic system, syphilis, infectious diseases such as: HIV I / II, HTLV, babesiosis, Chagas fever, visceral leishmaniasis (Kala Azar), actinomycosis, tularemia. Source: gov.pl/web/nck/dysk Qualifications.

Statistics show that the most common blood group in Poland is A Rh +, it is found in 1/3 of the population. The second place is taken by the 0 Rh + group, the third by B Rh +.

450 ml of whole blood is withdrawn at one time. The download itself usually takes 5 – 8 minutes (source: gov.pl/web/nck).

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