Nervous System and Excretory system Flashcards
Urine passes out fo the body through a tube called the
urethra
The main function of the excretory system is
to remove wastes
The ________ stores urine untill it passes out the body
bladder
The ________ are the organs that filter the blood and create liquid wastes
kidneys
_____________ are tiny filtering structures INSIDE the kidneys where urine is made
Nephrones
What are the 3 main components of urine?
water, salt and urea
To mainitain a stable internal environment
homeostasis
A change or signal in the environment that causes and organism to react
stimulus
A _________ is how an organism reacts to a stimulus
response
_______________ neurons send signals to muscles or organs
motor
________ neurons send signals to the brain
sensory
The part of the brain that controls breathing, digestion and other involuntary actions
medulla
The part of the brain that controls balance and coordination
cerebellum
The space between two neurons is called a
synapse
The part of the brain that controls memory
cerebrum
the part of the brain that controls the senses
cerebrum
In a reflex the signal does not go all the way to the _____
brain
The sense organs send information about the environment to the ______
brain
List the 5 senses
hear, touch, taste, smell, sight
Drugs that slow down the nervous system are called
depressants
Drugs that speed up the nervous system are called
stimulants
Name 2 other organs besides the kidneys that re excretory organs
skin and lungs
What is the main waste that is removed by the lungs
carbon dioxide
What is the main waste product excreted by the skin
heat
In order to maintain the proper amount of water in the body, when you need more water your body signals you by feeling ______ .
thirsty
What do the kidneys do to conserve water?
reabsorb more water back into the blood; excrete less water
