homeostasis Flashcards
what is homeostasis
maintaining a stable internal environment
what is a stimulus
a stimulus is a change in environment
explain how negative feedback helps to maintain a stable internal environment
when the level of something is too high or too low your body uses negative feed to bring it back to normal. it counteracts change
what makes up the CNS and what does it do
controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
what is a synapse
a gap between neurons
what is a purpose of a reflex action
sometimes a very quick response is needed, one that does not need the involvement of the brain. This is a reflex action. Reflex actions are rapid and happen without us thinking.
what is a reaction time
the length of time taken for a person or system to respond to a given stimulus
give one thing the cerebral cortex is responsible for
responsible for high-level brain functions such as language and verbal memory.
