Unit 5 - Defence Against Disease Flashcards

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1
Q

How does the skin help defend the body from pathogens?

A

It is a barrier and produces antimicrobial secretions

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2
Q

How does the nose help defend the body from pathogens?

A

It traps particles which could contain pathogens

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3
Q

How does the stomach help defend the body from pathogens?

A

Produces acid which kills the majority of pathogens which enter through the mouth

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4
Q

How do white blood cells help to defend against pathogens in the body?

A
  • Phagocytosis
  • Antibody Production
  • Antitoxin Production
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5
Q

What is phagocytosis?

A

The process in which a white blood cell engulfs a pathogen and destroys it

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6
Q

What is a vaccine?

A

A small amount of dead or inactive pathogens into the body to trigger an immune response

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7
Q

What is a placebo?

A

A fake, sugar drug

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8
Q

When a new drug is discovered, what two phases must the drug go through?

A
  • Pre Clinical Testing
  • Clinical Testing
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9
Q

During drug testing, what are scientists trying to find out?

A
  • Toxicity
  • Efficacy
  • Dosage
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10
Q

During pre-clinical trials, what is used to test the drug?

A
  • Cells
  • Tissues
  • Live Animals
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11
Q
A
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