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Questions and Answers
What is the role of phagocytes in the body's defense against pathogens?
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?
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?
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?
What is the process called when phagocytes engulf and digest pathogens?
What is the role of lymphocytes in the body's defense against pathogens?
What is the role of lymphocytes in the body's defense against pathogens?
What is the function of antibodies produced by lymphocytes?
What is the function of antibodies produced by lymphocytes?
White blood cells, also known as ______, defend against pathogens.
White blood cells, also known as ______, defend against pathogens.
When pathogens enter the body, ______ cells invade them to defend against infection.
When pathogens enter the body, ______ cells invade them to defend against infection.
The body's defense against pathogens involves ______ which acts as a barrier to protect the eye.
The body's defense against pathogens involves ______ which acts as a barrier to protect the eye.
One way the body defends against pathogens is by producing ______ to neutralize toxins.
One way the body defends against pathogens is by producing ______ to neutralize toxins.
Phagocytes engulf and digest pathogens using ______ inside the cell.
Phagocytes engulf and digest pathogens using ______ inside the cell.
Lymphocytes produce ______ which are specific to particular toxins.
Lymphocytes produce ______ which are specific to particular toxins.
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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.
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