HOMEOSTASIS Flashcards
What is homeostasis?
Maintaining a stable internal environment despite changing conditions
Why does the body need to maintain optimal conditions?
For optimum enzyme and cell function
True or false; homeostasis makes every internal condition stay exactly constant with no fluctuation
False
In what order are signals carried through the control system?
Receptor > coordination centre > effector
What is the role of a receptor?
Detect the change in internal/external conditions.
What is the role of the coordination centre?
Interprets change and organises a response
Where is the coordination centre located in the body?
Brain and spinal chord.
Name the two types of effectors and what they do.
The two types of effectors are muscles and glands.
Muscles contract when stimulated, glands release hormones.
Which is faster acting? Endocrine or nervous system?
Nervous system
Which acts generally across the body? Endocrine or nervous system?
Endocrine system
Homeostasis relies on n_______ f_______
negative feedback
How does negative feedback work?
Any change in a system causes an action that reverses the change
