lesson 1 homeostasis Flashcards
homeostasis is what
maintaining a stable internal environment
the conditions in your body need to be kept how
even when what
steady even when the external environment changes
homeostasis is really important, as your cells need what
the right conditions in order to function properly
your body also needs the right conditions for what
enzyme action
homeostasis is all about what
the regulation of the conditions inside your body and cells to maintain a stable internal environment in response to both changes in internal and external conditions
you have loads of what in your body
automatic control systems
what does the automatic control system do
including both what,
regulate your internal environment
including, both nervous and hormonal communication systems
there are control systems that maintain your what
your body temperature
your blood glucose level
your water content
all your automatic control systems are made up of 3 main components which work together for what
to maintain a steady condition
what are the 3 main components of the automatic control systems
they are cells called
receptors
coordination centres
(brain, spinal cord and pancreas)
effectors
what does negative feedback do
it counteracts changes
your automatic control systems keep your internal environment stable using what
a mechanism called negative feedback
when the level of something (eg water or temperature) goes too high or too low, what will occur
your body uses negative feedback to bring it back to normal
what is a stimulus
a change in environment
what does the receptor do
detects a stimulus
