12 Questions
What is the role of phagocytes in the body's defense against pathogens?
Phagocytes are white blood cells that circulate in the body, engulf pathogens, and then use enzymes inside the cell to destroy them.
What is the function of antitoxin produced by lymphocytes?
Antitoxin produced by lymphocytes neutralizes toxins released by pathogens, making them harmless to the body.
How do white blood cells (WBC) defend against pathogens?
WBC defend against pathogens by ingesting them, and their high salt content helps to destroy the pathogens.
What is the process called when phagocytes engulf and digest pathogens?
Phagocytosis is the process by which phagocytes engulf and digest pathogens.
What is the role of lymphocytes in the body's defense against pathogens?
Lymphocytes produce antitoxin to neutralize toxins and produce antibodies to recognize and attack specific pathogens.
What is the function of antibodies produced by lymphocytes?
Antibodies produced by lymphocytes recognize and attack specific pathogens, helping to eliminate them from the body.
White blood cells, also known as ______, defend against pathogens.
WBC
When pathogens enter the body, ______ cells invade them to defend against infection.
WBC
The body's defense against pathogens involves ______ which acts as a barrier to protect the eye.
eyelashes
One way the body defends against pathogens is by producing ______ to neutralize toxins.
antitoxin
Phagocytes engulf and digest pathogens using ______ inside the cell.
enzymes
Lymphocytes produce ______ which are specific to particular toxins.
antitoxins
Study Notes
Blood Components
- Platelets form sticky clots that reach with other cells to build a barrier, protecting the eye.
- White Blood Cells (WBC) defend the body against pathogens by ingesting them.
Pathogens and Toxins
- Pathogens release toxins into the body, making us feel ill.
- Toxins have specific molecules on their surface, making them antigens.
Lymphocytes
- Lymphocytes recognize specific molecules on pathogens and produce antitoxins to neutralize toxins.
- Antitoxins are specific to a particular toxin and combine with it to create a safe chemical.
Phagocytes
- Phagocytes are white blood cells that circulate in the body, engulfing pathogens, and then use enzymes to destroy them.
- Phagocytosis is the process by which phagocytes move towards pathogens or toxins and ingest them.
Blood and Tissues
- White blood cells can squeeze through the blood and enter tissues, attacking pathogens.
Test your knowledge of the human immune system, including the roles of white blood cells, platelets, and lymphocytes in defending against pathogens. Learn about the different types of immune responses and how the body protects itself from infection.
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