Прочитайте текст. Blood cells are of three kinds: red blood cells erythrocytes white blood cells leu...: ответ на тест 1072137 - Английский язык

Прочитайте текст.
Blood cells are of three kinds: red blood cells (erythrocytes), white blood cells (leukocytes and lymphocytes), and blood platelets.
Red blood cells are approximately round, disk-shaped with high edges. They measure approximately 1/3,000 of an inch in diameter. The healthy male has about 5 million red blood cells per cubic millimeter of blood. A healthy woman has about 10% fewer.
Закончите предложение:
In humans, mature red blood cells are …

Прочитайте текст.
White blood cells are about 1.5 to 2 times as large as red blood cells, which outnumber them by at least 500 to 1. The average number of white blood cells in the healthy adult is around 7,000 per cubic millimeter. In the presence of infection this number may go as high as 40,000. A great increase in the white blood count is almost always a sign of infection.
Закончите предложение:
In the presence of infection the average number of white blood cells …

Прочитайте текст.
Hemoglobin is the key element in the red blood cell. It is a complex protein that requires iron for its formation. Oxygen picked up in the lungs during the circulation of the blood combines loosely with hemoglobin. Then, in every part of the body where it is needed for cell metabolism, oxygen is released by the hemoglobin, which picks up carbon dioxide on the return journey to the heart and lungs.
Закончите предложение:
Hemoglobin in the blood carries oxygen from the respiratory organs to …

Прочитайте текст.
White blood cells are about 1.5 to 2 times as large as red blood cells, which outnumber them by at least 500 to 1. The average number of white blood cells in the healthy adult is around 7,000 per cubic millimeter. In the presence of infection this number may go as high as 40,000. A great increase in the white blood count is almost always a sign of infection.
Закончите предложение:
In the presence of infection the average number of white blood cells …

Прочитайте текст.
White blood cells play the role of scavenger. Most of them engulf and devour bacteria and other particles of foreign matter in the blood stream. Hence they prevent and fight infection and aid in wound repair. Pus is made up largely of dead white blood cells.
The names of various different kinds of white blood cells are long and complicated: for example, polymorphonuclear eosinophil. Because they devour bacteria, they are also called phagocytes. White blood cells are made in the bone marrow, the lymph nodes, and other places in the body.
Закончите предложение:
White blood cells are cells of the immune system involved in defending the body against …

Прочитайте текст.
Red blood cells are destroyed and replaced at a rate of about 1% a day. These cells are formed in the bone marrow, particularly in the spine and hip bones, the ribs and breast-bone. They are destroyed largely in the spleen.
Blood platelets are about 1/3 as large as red blood cells. They are concerned with blood clotting.
Закончите предложение:
Red blood cells begin their existence in …