Homeostasis
This is the process of maintaining a stable internal environment.
Homeostasis
This is your body's first barrier against pathogens.
skin
Central Nervous System is made up of what organs?
brain and spinal cord
Direct or Indirect?
Catching a cold after shaking someone's hand.
direct
The normal body temperature humans try to maintain.
37°C?
Name THREE examples of the first line of defence.
Possible answers:
These detect changes in the environment.
receptors
Direct or Indirect?
Getting food poisoning from contaminated food.
indirect
This hormone lowers blood glucose levels.
Insulin
Which line of defence includes white blood cells that destroy invading pathogens?
third
These carry out the body's response, returning the body back to stable conditions
effectors
True or False
Viruses can reproduce without entering a host cell.
flase
Name TWO body responses that help cool the body.
Sweating, Vasodilation
A student gets a cut while playing sport. Which line of defence has been broken?
first line of defence
Put these in order: Effector, Stimulus, Response, Receptor, CNS.
Stimulus →
Receptor →
CNS →
Effector →
Response
A Petri dish experiment showed a large clear zone around one antimicrobial substance. What does this tell us?
The antimicrobial was effective at preventing bacterial growth.
When blood glucose becomes too low, this hormone is released.
Glucagon
Match each defence to the correct line of defence:
Why are reflexes important?
They produce fast automatic responses that help protect the body from injury.
A student cuts their finger while gardening.
Describe THREE defences the body will use in order.