B.10 Flashcards
What is homeostatis
Maintaining a stable internal environment
What does homeostatis reactions include
Temperature
CO2
pH
Salinity
What is the nervouse system made up of
Brain
Spinal cord
Nerves
Receptors
What are reflex actions
They are automatic reactions that dont require a part of the brain
What are the 3 parts of the brain
Cerebral cortex
Cerebellum
Medula
What does the cerebral cortex do
Controls consciousnous, memory and intelligence
What does the medulla do
Controls unconcious activities:
Breathing
Heart beats
What does the cerebellum do
Motor activities and balance
What are MRI scans
Magnetic renassance imaging allows doctors to see what happens in a persons brain while they are alive
E.g. easier to detect brain tunours
What is myopia
Short sited
What is hyperopia
Long sitedness
What kind of lens is used to treat myopia
Concave lens
What kind of lens is used to treat hyperopia
Convex
How can you help treat eyesight dissorders
Contact lenses
Lazer eye sergery
Replacment lenses
