16 Questions
What is the main function of plasma in the hematologic system?
To regulate acid-base balance and immune responses
What is the role of hemoglobin in red blood cells?
To increase oxygen carrying capacity of the blood
What is the definition of anemia?
Reduced hemoglobin concentration in blood below the lower limit of the normal range
What is the lower extreme of the normal hemoglobin level for males?
13.0 g/dl
What is the primary cause of tissue hypoxia in anemia?
Decreased oxygen carrying capacity of the blood
Which tissues are most affected by anemia due to their high oxygen requirement?
Heart, CNS, and skeletal muscle during exercise
What is the term for a decrease in the number of red blood cells?
Anemia
What is the role of platelets in the hematologic system?
To interact with plasma and coagulation factors to control bleeding
What is the main characteristic of microcytic, hypochromic anaemia?
Small red cells with decreased haemoglobin
What is the primary cause of megaloblastic anaemia?
Deficiency of vitamin B12 or folic acid
What is the classification of anaemia based on red cell size and haemoglobin content?
Morphologic classification
What is the characteristic sign of anaemia?
Pallor
What is the cause of anaemia of chronic disorders?
Impaired red cell formation
What is the characteristic symptom of anaemia in older patients?
All of the above
What is the classification of anaemia based on etiology?
Etiologic classification
What is the characteristic of normocytic, normochromic anaemia?
Normal red cells with normal haemoglobin
Review of the hematologic system, including plasma, red blood cells, and white blood cells, and their roles in maintaining health and preventing diseases such as anemia and polycythemia.
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