Homeostasis Flashcards
what is homeostasis
regulation of internal conditions of a cell or organism to maintain optimum conditions for function in response to internal and external changes
what is homeostasis all about
keeping internal conditions as constant as possible
in the human body why is homeostasis used
to keep the blood, glucose concentration, body temperature and water levels constant
Homeostasis consists of _________ _______ _______ making sure that the internal conditions of the body stay as ________ __ ________.
Homeostasis consists of automatic control systems making sure that the internal conditions of the body stay as constant as possible.
what are the automatic control systems in the human body
nervous system and hormones
what are the three features of an automatic control system
receptor cells, co-ordination centre and effector
what do receptor cells do
detect changes in the environment e.g the body’s internal or external conditions
what is the scientific word for a change to the environment
a stimulus
what are examples of a co-ordination centre
the brain, spinal cord or the pancreas
what is the role of the co-ordination centre
receives and processes the information from the receptor cells
what is an effector
a muscle or a gland
what is the job of an effector
to carry out the response - restore the optimum level
