Notes - Survey in Biopsychology
Neuroanatomy & Neurons
(lecture 1)
Divisions of the Nervous System
central nervous system (CNS) - brain and spinal cord
acerent nerves - receive info/sensory input to the
ecerent nerves - send info/motor output to the PN
peripheral nervous system (PNS) - nerves that run throug
somatiT nervous system - voluntary movement
automatiT nervous system - involuntary control
sympathetic nervous system - increases en
parasympathetic nervous system - conserv
Hhe Buman Crain
.eighs 863k lbs/160 5g
contains 3k-1%% billion neurons and many more glial cells
has 1%%-1'% trillion connections
uses about 8%-8'x of the bodyzs total energy
each neuron performs '% calculations a second
massively parallel - neural calculations are performed sim
cerebral corte, - the outer covering of the cerebral hemispher
neurons - specialijed cells that transmit information through a
involves generation and passing of neural signals in the brain
Neuron StruTture
cell body (soma) - contains the nucleus and other organellesq
dendrite - processes signals coming from the cell body / rece
contacts (input) from other neural cells
a,on - long process that pro:ects from the cell body (output)
myelin - an insulating layer around nerves6 allo.s electrical im
Neuroanatomy & Neurons
(lecture 1)
Divisions of the Nervous System
central nervous system (CNS) - brain and spinal cord
acerent nerves - receive info/sensory input to the
ecerent nerves - send info/motor output to the PN
peripheral nervous system (PNS) - nerves that run throug
somatiT nervous system - voluntary movement
automatiT nervous system - involuntary control
sympathetic nervous system - increases en
parasympathetic nervous system - conserv
Hhe Buman Crain
.eighs 863k lbs/160 5g
contains 3k-1%% billion neurons and many more glial cells
has 1%%-1'% trillion connections
uses about 8%-8'x of the bodyzs total energy
each neuron performs '% calculations a second
massively parallel - neural calculations are performed sim
cerebral corte, - the outer covering of the cerebral hemispher
neurons - specialijed cells that transmit information through a
involves generation and passing of neural signals in the brain
Neuron StruTture
cell body (soma) - contains the nucleus and other organellesq
dendrite - processes signals coming from the cell body / rece
contacts (input) from other neural cells
a,on - long process that pro:ects from the cell body (output)
myelin - an insulating layer around nerves6 allo.s electrical im
