18 Questions
What is the normal range of neutrophils in the blood?
4000-5000 per microliter
What happens to neutrophils and macrophages after they engulf bacteria and necrotic tissue?
They die and form pus
What is the term for the uncontrolled production of white blood cells caused by cancerous mutations?
Leukemia
What is the result of the autolysis of dead cells and necrotic tissue in pus?
The dead cells and tissue are eventually absorbed
What is the characteristic of leukemia cells that allows them to spread to other areas of the body?
Their ability to metastasize
What is the term for the formation of a cavity in inflamed tissue that contains pus?
Abscess
What is the primary function of neutrophils and macrophages?
Cellular ingestion of foreign particles
What is the role of antibodies in phagocytosis?
They make bacteria susceptible to phagocytosis
What is the result of tissue injury in the body?
Inflammation
What is the purpose of the selective procedures in phagocytosis?
To ensure the ingestion of only certain foreign particles
What is the relationship between the immune system and phagocytosis?
The immune system enhances phagocytosis
What is a characteristic of foreign particles that makes them susceptible to phagocytosis?
They have a rough surface
During inflammation, which process causes the swelling of tissue cells?
Increased permeability of the capillaries
What is the primary function of pseudopodia in phagocytosis?
To project around the particle and fuse with other pseudopodia
Which of the following is a characteristic of neutrophilia?
An acute increase in the number of neutrophils in the blood
What is the primary advantage of macrophages over neutrophils in phagocytosis?
Macrophages are more powerful phagocytes
What is the role of lysosomes in phagocytosis?
To fuse with the phagocytic vesicle and release digestive enzymes
What is the result of the fusion of lysosomes with the phagocytic vesicle?
The release of digestive enzymes
This lecture covers the role of phagocytosis in neutrophils and macrophages, including the selective procedures involved. It also discusses the importance of phagocytosis in cellular ingestion of foreign agents.
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