PSYC100 Chapter Notes - Chapter 3: Excitatory Postsynaptic Potential, Inhibitory Postsynaptic Potential, Postsynaptic Potential
Biological factors; physical and chemical changes that cause and occur, in response to
behavior and mental processes
1.
Nervous system
Nervous system; cells that communicate within an organism to allowing it to gain information
on inside and outside organism, allowing it to respond
1.
3 main functions
2.
Input; receive information
3.
Processing; ingrate the input into past experiences
4.
Output; respond
5.
Cells of the nervous system
-Nervous system 2 main type of cells
Neurons (nerve cells) ; cells rapidly respond to signals and quickly send signals
1.
Glial cells; hold nervous system together and help them communicate with one another.
Keep chemical environment stable, provide energy, and secrete chemicals
2.
Neurons contain;
-
Outer membrane; semipermeable (lets in some chemical ions, blocks out others)
1.
Cell body – including nucleus (contains genetic information and cell function)
2.
Mitochondria – turns oxygen and glucose (sugar) into energy
3.
Axons; carry signals from body of neuron out to communicate with other neurons
4.
Dendrites; receive signals from the axons of other neurons
5.
Synapses; gap between neurons across which they communicate
6.
Action potential
GET NOTES FROM OLD BOOK, THIS ONE IS CONFUSING
-
Synapses and communication between neurons
Neurotransmitters; chemical that assist the transfer of signals from one neuron to another
Vesicles; where the chemicals are stored in little ‘bags’ (tip of axon)
-
Postsynaptic cell; action potential reaches end of axon, neurotransmitter is released into the
synapse, spread to reach next cell
-
Excitatory and inhibitory signals
Postsynaptic potential; change in the membrane potential of a neuron that has received
stimulation from another neuron
-
Excitatory postsynaptic potential; depolarizes the neuronal membrane, making cell more
likely to fire an action potential
-
Inhibitory postsynaptic potential; hyperpolarizes the neuronal membrane, making a cell less
likely to fire action potential
-
Organization and functions of nervous system
Neural networks; neurons that work together to perform complex function (brain and spinal
cord)
-
Nervous system 2 main parts;
-
Central nervous system (CNS); parts of nervous system incased in bone (brain, spinal cord)
1.
Peripheral nervous system (PNS); parts of nervous system not incased in bone
2.
Week 4 Reading -Chapter 3
Friday, 10 March 2017
10:58 AM
Document Summary
Biological factors; physical and chemical changes that cause and occur, in response to behavior and mental processes. Nervous system; cells that communicate within an organism to allowing it to gain information on inside and outside organism, allowing it to respond. Nervous system 2 main type of cells. Neurons (nerve cells) ; cells rapidly respond to signals and quickly send signals. Glial cells; hold nervous system together and help them communicate with one another. Keep chemical environment stable, provide energy, and secrete chemicals. Outer membrane; semipermeable (lets in some chemical ions, blocks out others) Cell body including nucleus (contains genetic information and cell function) Mitochondria turns oxygen and glucose (sugar) into energy. Axons; carry signals from body of neuron out to communicate with other neurons. Dendrites; receive signals from the axons of other neurons. Synapses; gap between neurons across which they communicate. Get notes from old book, this one is confusing.
