Science exam Flashcards
What is Homeostasis?
Homeostasis is a self regulating process by which an organism maintains its functions while adjusting to the optimal conditions
What are the 2 types of effectors?
the muscle (motor effectors) and the exocrine glands (secretory effectors)
name the group of plants that have special adaptations for low water
Xerophytes
identify the type of organism that actively controls the amount of salt in their bodies
Osmoregulator
Which two organ systems are most responsible for maintaining homeostasis?
Nervous and endocrine
What is a constant environment?
The maintenance of a constant internal environment despite changes in internal and external conditions.
What are 3 examples of Homeostasis?
Thermoregulation, Blood Glucose regulation and Osmoregulation.
What is a negative feedback mechanism?
A negative feedback loop brings a system closer to a target of stability or homeostasis.
Why is homeostasis important to an organism?
If an organism does not maintain stable internal conditions, it can become sick/diseased and if not corrected, disease can cause death.
How does the body use control systems?
The Nervous system tells your muscles and organs what to do and how to respond to its environment
the endocrine system makes hormones and puts them in the body’s blood system
What are 2 receptors?
ion channel receptors allow a chemical neurotransmitter message to an electrical current (this step is vital in the nervous system and is an internal receptor
ears are external receptors as they recept sound waves and translate them to your body.
What is the
