Cell phones never work in horror movies Imagine an attempt to reduce cell phone use in class by the teacher locking the door and pulling out all sorts of torture devices That would be kind a crazy And then the teacher walks right up to you and asks ID: 201193
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Activator
Cell phones never work in horror movies. Imagine an attempt to reduce cell phone use in class by the teacher locking the door and pulling out all sorts of torture devices. That would be kind a crazy. And then the teacher walks right up to you and asks…
Which organs do you think are absolutely necessary in order for you to keep living? Slide2
Wait… WHAT IS HE DOING WITH THAT MOUSE TRAP!
The Nervous SystemSlide3
Today’s class will be Nerve Wracking
The nervous system is used by your body for a lot of things.
But before we can get to the system, we need to first understand the individual unit. The neuron.
Pg 962Slide4
Ask me about the synapseSlide5
Copy these notes
There are three kinds of neurons:
Sensory neurons,
interneurons
, and motor neurons.
The sensory neuron creates an impulse that travels to an interneuron in the spine or brain.
The interneuron then sends an impulse to a motor neuron.
The motor neuron then signals its muscle to act.
This whole pathway is called an
Arc ReflexSlide6
Action PotentialSlide7
Organization of the Nervous System
There are two major divisions
The Central Nervous System:
(CNS) brain and spinal cord
The Peripheral Nervous System:
(PNS) the sensory neurons and motor neurons
Responsible for transmitting electrical messages throughout the body.
Nerve:
a bundle of several neuron axons Slide8
The Brain
Over 100 billion neurons
Cerebrum: the largest part of the brain. Location of thought processes.
Cerebellum: controls balance, posture, motor skills.
Medulla oblongata: breathing and heart rate.
Hypothalampus
: body
tempurature
, thirst, hunger.Slide9
The peripheral nervous system
The somatic nervous system
The autonomic nervous system
Voluntary
Relays information to and from skin and
mucles
Involuntary
Relays information to internal organsSlide10
Spooky links
http://youtu.be/8-dZnp66t1Y
www.youtube.com/watch?v=dxQmOR_QLfQ
www.youtube.com/watch?v=2YZJt_Bw3eo