Homeostasis Flashcards
What is homeostasis?
The maintenance of a constant internal enviroment
What things are kept the same in our bodies?
Water levels, temperature, sugar (glucose) levels
What makes up the nervous system?
Brain, spinal cord, nerves
What is a reflex?
An automatic response, it happens without thinking
What is a stimulus?
A change in the environment, like temperature change
What does a receptor do?
Detects a stimulus
What does an effector do?
Causes a response, like a muscle causing movement
In a reflex arc, which neuron carries the electrical impulse from the receptor to the spinal cord?
Sensory neuron
In a reflex arc, which neuron carries the electrical impulse from the spinal cord to the effector?
Motor neuron
In a reflex arc, which neuron passes the electrical impulse from the sensory to motor neuron?
Relay neuron
How are messages transmitted in the nervous system?
As electrical impulses
What is the endocrine system?
The hormone system
What is insulin?
A hormone
What does insulin do?
Causes blood glucose to be stored as glycogen in the liver
When is insulin released?
When the blood glucose level is too high
