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Nervous System (major parts of the brain (frontal lobe (Broca's Area…
Nervous System
major parts of the brain
frontal lobe
personality, behavior, emotions
judgement, planning, problem solving
body movement, intelligence
Broca's Area
read and understand language
wernicke's area
parietal lobe
interprets language, words
sense of touch, pain, temperature
occipital lobe
interprets vision
temporal lobe
understanding language
memory, hearing
organizing
brain stem
automatic functions such as breathing, heart rate, body temperature, wake and sleep cycles, digestion, sneezing, coughing, vomiting, and swallowing
cerebrum
performs higher functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement.
cerebellum
function is to coordinate muscle movements, maintain posture, and balance.
tissues (structure and function of neuron)
dendrites
receives signals from other cells
axon
axon terminals
sends signals
myelin sheath
allows electrical impulses to transmit quickly and efficiently along the nerve cells
cell body
contains usual organelles
nucleus
parts of reflex arc
receptors
responds to external stimulus and transmits signals to sensory nerve
sensory neurons
nerve cells within the nervous system responsible for converting external stimuli into internal electrical impulses
interneurons
enables communication between sensory or motor neurons and CNS
motor neurons
efferent neurons that originate in the spinal cord and synapse with muscle fibers
muscles
action potential
special channels called stimulus gated channels in the dendrite open when certain chemicals like neurotransmitters bind to them
depolarization
once the charges reach -59 mV because the Na+ moving into the neuron, the channels will open and Na+ floods the cell and the neuron becomes positive going to 30 mV
repolarization
Na+ channels close and K+ channels open , K+ floods out the cell and the charge turns negative again
hyperpolarization
K+ goes back quickly and the charge of -75 mv is reached for a short period of time before resting potential is reached once again
major functions of nervous system
collects sensory input from body and external environment
process and interpret sensory input
respond to sensory input
major nerves
central nervous system
brains and spinal cord
peripheral nervous system
nerves outside the brain and spinal cord
major divisions
lobes and their functions
layers of the menings
spaces and ventricles
major parts and function of spinal cord
drugs that affect the brain
cranial nerves
spinal nerves
anatomy of spinal cord
neurotransmitters
compare & contrast autonomic nervous system
subdivisions
