Biology-disease and the nervous system Flashcards
How is our skin a natural defence
Our skin covers our body and stops microbes getting in
What substance in your nose traps microbes that are sweet away by mucus
Cilea
What happens if microbes do get in your body
Microbes can engulf and digest them
Why do some white blood cells make antibodies
To help other white blood cells to destroy the microbes
What is a disadvantage of an antibody
Each anti body has to be specially made to attach to a microbe so the take around 10 days to make
What does immune to a disease mean
You cannot catch or have that disease
Why should you only get chickenpox once
You should only get chickenpox once because your body has created antibodies to fight it the first time so the antibodies will still be in your system so you van fight the disease
Why do you have antibiotics to make you better
Antibiotics help to harm the bacteria in your body
True or false
Your body has no natural defences against disease
False your body does have natural defences to protect you from disease such as chemicals in your tears and stomach kill microbes
Name the two main parts of the Central Nervous System
Brain
Spinal cord
Name the two main parts of the peripheral nervous system
Nerve fibres
Detects changes in stimuli
What do your eyes detect
Light
How is sound detected
By your ears
What does your skin detect
Presume, heat, pain, texture
What does your nose smell
Chemicals in the air
