Biology B10 Flashcards
What does homeostasis mean?
Conditions in the body are controlled, to provide a constant internal environment
Name three internal conditions maintained by homeostasis
Body temperature
Blood sugar level
Body’s Water content
Why is it important to maintain blood sugar level?
To provide cells with energy
What is a stimuli?
Changes in the environment
What is an effector
Muscles or glands that bring about a response
What is a receptor
Cells that detect change in the environment
Name three sense organs
Tongue
Eye
Skin
What stimulus does the skin sense?
Pressure and temperature
What is the reflex arc?
Stimulus - receptor - sensory neurone - relay neurone - motor neurone - effector - response
What is the medulla responsible for?
Unconscious activity such as heart rate
What is the cerebral cortex responsible for?
Conscious thought, memory and language
What is the cerebellum responsible for?
Coordinating muscular activity and balance
What is the hypothalamus responsible for?
Regulating body functions such as tempreature
What is the pituitary gland responsible for?
Releases hormones that control body actions
