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Questions and Answers

Which of these statements is correct about the blood?

With a severe anemia the haematocrit is higher than the normal values

The haematocrit is the number of RBC that we have in blood

Its medium pH is around 7.4 (correct)

The density of the blood is 2 times more the density of the water

The red colour is given by the platelets

Which affirmation is false about the blood?

The oncotic pressure helps to maintain the water outside the vessels and it is exerted by the plasma proteins.

There is a constant diffusion between plasma and interstitial fluid but also between interstitial fluid and intracellular fluid, which is the major portion of the body fluids

About 60% of the blood is plasma and 40% is RBC, but these percentages can vary considerably in different people, depending on gender, weight and other factors.

Proteins are in their anionic form in the plasma (correct)

Men have higher amount of RBC than women

Which ion is the regulator of acid-base balance and CO2 transport?

Calcium

Carbonate (correct)

Phosphate

Sodium

Chlorine

The first cell that can be identified as belonging to the red blood cell series is the ______

proerythroblast Signup and view all the answers

In the succeeding generations, the cells become filled with HGB to a concentration of about 34%, the nucleus condenses to a small size, and its final remnant is absorbed or extruded from the cell. The cell at this stage is called a ______ because it still contains a small amount of basophilic material, consisting of remnants of the Golgi apparatus, mitochondria, and a few other cytoplasmic organelles.

reticulocyte Signup and view all the answers

90% of Erythropoietin is created in the...

Kidney Signup and view all the answers

In pernicious anemia the basic abnormality is:

There is a fail to produce gastric secretions as IF, having a lack in vit.B12 Signup and view all the answers

About the red blood cells. Which is false?

Hemoglobin can act effectively outside the RB Signup and view all the answers

Which is true about leukocytes?

They are the mobile units of the body's protection system. Signup and view all the answers

Explain the Monocyte-Macrophage Cell System in the Lungs.

Tissue macrophages are components of the alveolar wall and they can phagocytose particles that become entrapped in the alveoli. When these particles are digestible, the macrophages digest them and release the products to the lymph. When they are not digestible, macrophages will form a "giant cell" capsule that, if it is possible, will be slowly eliminated. Signup and view all the answers