Bell Ringer – Which of your Unit 2 Vocab words are depicted below? Explain how each pic. relates to the word. 1. 2. 3. 4.
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Bell Ringer – Which of your Unit 2 Vocab words are depicted below? Explain how each pic. relates to the word.
1. 2.
3. 4.
The Nervous SystemUnit II: Biology and Behavior
-What is it?-How does it affect our behavior?
The Nervous SystemWill Explain Why We FEEL…
Pain Strong Nervous
The Nervous System is …
A big communication system between the brain and the body.
Controls body movement & senses
Helps us to gain information that is going on inside and
around our body Respond accordingly
Neural Transmission - Perceive a stimulus, select a response, execute response
Bell-Ringer1. What symptoms might be displayed
if you had a problem/disorder of the Nervous System? Be as specific as possible.
2. Briefly describe a situation when you were really startled or scared. Include how your body felt in this situation. What involuntary reactions did your body have to this scary situation?
The Nervous System is …
Made up of nerves – strings of long thin cells called neurons.
Nerves send messages between the brain and the body.
The Nervous System is …
Neurons – fundamental unit of the nervous system
nerve cellhave the ability to communicate with
one another
Neuron Structure
The Nervous System is …
Two Parts 1. Central Nervous
System (CNS)brain and spinal
cord – encased in bone
The Nervous System is…
2. Peripheral Nervous System (PNS)Nerves & Neurons Connects the CNS
to the body Carries
information to and from the brain
A “blueprint” of the Nervous System
How it affects our behaviors…Sympathetic Nervous System Flight or Fight ResponsePrepares our body to confront the situation or RUN!
How it affects our behaviors…Sympathetic VS. Parasympathetic
How it affects our behaviors …
neurotransmitters – chemicals released by neurons which help them pass messages.
Three important neurotransmitters have a big influence on our feelings and behavior.
SerotoninFunction deals with mood control.
Lack of serotonin has been linked to depression.
DopamineIts function is motor movement
and alertness.
Lack of dopamine is associated with Parkinson’s disease.Overabundance is associated with schizophrenia.
EndorphinsFunction deals with pain control.Can give a euphoric feeling
We become addicted to endorphin causing feelings.
Build Your Own Neuron! Working in pairs, you are to build a neuron model using the provided bag of supplies. Label all 6 parts from the list below.
Identify on your base paper the functions of all 6 parts.
Dendrites Cell body Axon Myelin sheath Axon terminals Neurotransmitters
Label each part 2pts. (x6) = 12 Identify each function 3pts. (x6) = 18 Construction/Correct placement =15
Neatness 15
Total pts. 60
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