Levels of Organization 1
What is the smallest part of the nervous system called?
Nerve Cell
Homeostasis is the way our body stays _____________.
Just right.
You sweat on a hot day.
Find the stimulus.
Find the response.
Stimulus - hot day
Response - sweat
Name an organ in the nervous system
Brain and/or spinal cord
On a hot day, our body might __________ to maintain homeostasis.
sweat
You spit out the coffee that Amica makes because it tastes like hot sauce!
What's the stimulus?
What's the response?
Stimulus: bad tasting coffee
Response: spitting it out
What is the function (job) of the nervous system?
To carry messages to and from your brain.
To allow you to respond to stimuli
On a cold day, our body might _____________ to maintain homeostasis.
shiver
You are walking home and you see Amica following you. Your heart starts to beat faster, and you run away!
What's the stimulus? What's the response?
Stimulus: you see Amica following you
Response: your heart beats faster and you run away
What is the name of the cells that carry messages to and from your brain?
Nerve Cells
When we eat breakfast, our blood sugar will _________. Then, our body will release insulin, and our blood sugar will _____________.
increase, decrease
You catch the cold virus. Your body fights it off by giving you a fever and you making your throat sore.
Stimulus: Virus
Response: fever, sore throat
Stomach tissue is made of stomach cells.
Lung tissue is made of lung cells.
What is your brain made of?
Brain cells.
The 5 levels of organization in order.
What is Cell --> Tissue --> Organ --> Organ System --> Organism
Gray matter, a thin layer of brain cells, covers your brain. How would you classify gray matter?
Tissue
If we eat too much sugar, our body will release...
insulin
When you run, your heart rate increases in order to bring oxygen to your body.
What's the stimulus? What's the response?
Stimulus: running
Response: Increased heart rate