agenda – monday, february 10 th
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Agenda – Monday, February 10 th. Hand back quizzes/collect homework Neurotransmission review and notes Homework: NONE. Quizzes #3 and #4. Quiz #3 5 th hour Mean: 10.5/13 7 th hour Mean: 11.4/13 Quiz #4 5 th hour Mean: 13.4/19 7 th hour Mean: 13.4/19. Biology of the Mind. - PowerPoint PPT PresentationTRANSCRIPT
Agenda – Monday, February 10th Hand back quizzes/collect homework Neurotransmission review and notes Homework: NONE
Quizzes #3 and #4 Quiz #3
5th hour Mean: 10.5/13 7th hour Mean: 11.4/13
Quiz #4 5th hour Mean: 13.4/19 7th hour Mean: 13.4/19
Biology of the Mind
Starting Small Find your partner (person with the
matching term/definition) Three tasks
ASK: What part of the biology unit are you MOST overwhelmed by?
Using the blank diagram, try your best (WITHOUT NOTES) to label the neuron
Types of Cells
Individual nerve cells
Generate and conduct electrical impulses Thoughts,
movement, behavior, pain, pleasure, memories, etc.
“Housekeeper” cells
Hold neurons in place
Transport oxygen and nutrients to neurons
Remove and destroy dead neurons
Neurons Glial Cells
Types of Neurons Afferent Neurons (Sensory)
Transfer information from sensory receptors to the brain
(A for ARRIVAL) Efferent Neurons (Motor)
Transfer information from the brain to rest of body (E for EXIT)
Interneurons Internal communication within the Central Nervous
System (I for INTERNAL)
The Neuron
Agenda – Tuesday, February 11th Continue neurotransmission notes Neurotransmitter article assignment Article due THURSDAY
Neurotransmission Resting Potential: Each neuron sits/rests at a -70
charge, which is the only time the neuron is capable of firing an action potential
Threshold: The amount of neurotransmitters that need to be received to trigger an action potential
Action Potential: A brief electrical charge that travels through a neuron allowing a neurotransmitter to exit the neuron and enter another
Neurotransmission All-or-none potential: A neuron either fires
or it doesn’t (no in-between) Like a gun
Depolarization: A message from another neuron causes the inside of the neuron to become positive (+)
Selective Permeability: The membrane letting in/shutting out certain ions
Neurotransmission Repolarization: Occurs right after the
action potential as potassium moves out of the inside of the cell restoring the inside back to a negative charge
Refractory period: A brief period that the neuron cannot fire until -70 charge is restored
The Magic School BusThere is a bus full of unhappy children on their way to Normal Community High school. They’re feeling sad because the world outside looks so happy, the sun is shining, the birds are chirping, etc. At a certain point, the driver makes a stop and picks up a kid by opening the bus door. The wonderful air whooshes in, and if enough kids go from sad to happy, then they start getting rambunctious. Having now, wasted their energy, there’s a short time before they can start it up again.
Parts of a NeuronSoma NucleusDendriteAxonMyelin Sheath
Neuronal FiringResting PotentialThresholdAll-or-NothingDepolarizationSelective Permeability RepolarizationRefractory Period
http://science.education.nih.gov/supplements/nih2/addiction/activities/lesson2_neurotransmission.htm
Agenda – Thursday, February 13th Neurotransmitter Review
Handout Discussion
If time: work on “Brain Game” review Homework: EXAM #2 TOMORROW!!!
Neurotransmitters Purpose:
Chemicals that transmit signals from neurons through the process of neurotransmission
Provide meaning and use to our brain structures
Neurotransmitters GABA Norepinephrine Glutamate Serotonin: Regulates mood, sleep,
eating, arousal, and pain Low levels contribute to depression and
suicidal tendencies Dopamine Acetylcholine
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Neurotransmitters
Dopamine
Serotonin
Acetylcholine
Glutamine
GABA
Endorphins
Normal Function:Attention; Emotion
(Pleasure); voluntary movement
Problems with Imbalance:Too much: Schizophrenia,
Too little: Parkinson’s
Substances that Affect:Cocaine, amphetamines,
Ritalin, alcohol
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Neurotransmitters
Dopamine
Serotonin
Acetylcholine
Glutamine
GABA
Endorphins
Normal Function:Mood, Hunger, Sleep, &
Arousal
Problems with Imbalance:Lack associated with
Depression, certain anxiety disorders (OCD)
Substances that Affect:Prozac, hallucinogenics
(e.g. LSD)
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Neurotransmitters
Dopamine
Serotonin
Acetylcholine
Glutamine
GABA
Endorphins
Normal Function:Muscle Action, Learning &
Memory
Problems with Imbalance:Certain muscular disorders,
Alzheimer’s disease
Substances that Affect:Curare
(Antagonist: Blocks NT)
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Neurotransmitters
Dopamine
Serotonin
Acetylcholine
Glutamine
GABA
Endorphins
Normal Function:Most prevalent inhibitory
neurotransmitter in neurons of CNS
Problems with Imbalance:Lack of leads to Seizures &
Tremors
Substances that Affect:Tranquilizers (e.g. Valium,
Librium), alcohol
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Neurotransmitters
Dopamine
Serotonin
Acetylcholine
Glutamine
GABA
Endorphins
Normal Function:Primary excitatory
neurotransmitter in CNS; involved in learning and
memory
Problems with Imbalance:Too much overstimulates
brain: Migranes & Seizures
Substances that Affect:PCP (“angel dust”), MSG
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Neurotransmitters
Dopamine
Serotonin
Acetylcholine
Glutamine
GABA
Endorphins
Normal Function:Pleasure (Addiction) and
control of pain
Problems with Imbalance:Lack of leads to heightened
sensation of pain Substances that Affect:
Opiates: opium, heroin, morphine, methadone
(Agonists: Mimic)
http://www.thirteen.org/closetohome/animation/coca-anim.html