Nervous System: Class Notes Flashcards
name highlighted
hypothalamus
Parasympathetic triggers what reactions
rest & digest
Pia Mater
Nearest meninge
rich supply of blood vessels
Sympathetic System, what it does, causes and creates
Fight or Flight
Mobilizes body during extreme situations like exercise or fear
Cause increased heart rate,pulse rate, deep breathing,dialated eyes& sweaty skin
Creates energy that allows to body to cope rapidly w/ threatening situations
name
and spell
V-e-n-t-r-i-c-l-e-s
Name the 2 parts the ANS system is divided into
Parasympathetic
Sympathetic
Effernt Nerves
Motor nerves that carry impulses from CNS to organs, glands, muscle. They effect the organ & bring a response
Efferent= engine(motor)
Keywords for a Certain type of nerve
Sensory
KEyword for Afferent NErves
Sympathetic (from ANS) triggers what reaction
fight or flight
Structures of CNS
Brain & Spinal Cord
Afferent Nerves
Sensory nerves that carry impulses to CNS from sensory receptors located in various parts of body
Think: They ASCEND=afferent
True or False Dura Matter has two T’s
FALSE!
dura mater has one t
look at it
Input sensory nerves do what
Information travels along afferent nerves to CNS
what 2 systems are in the ANS
Sympathetic
Parasympathetic
Anatomy of ANS
Ganglia on either side of spinal cord
When does the brain begin to develop during pregnancy
14 weeks; anterior end of tube begins to expand
Spell the 3 layers protecting the brain and spinal cord
M-e-n-i-n-g-e-s
Describe the PNS
Provide communication lines(like a phone)
Link all parts of body carrying impulses from CNS to the glands & muscles
What re the two types of nerves in the PNS
(12 pairs) Afferent
(31 pairs) Efferent
Parasympathetuc System
Allows to unwind & conserve energy
Most active when @ rest & not threatned
decrease demand on cardiovascular system
aka rest & digest and Housekeeping system
What neuronstransmitter is associated with PD
Dopamine
PNS stands for…
(spell it)
P-e-r-i-p-h-e-r-a-l Nervous System
What do the synaptic bulbs do
connect to dentrites that takes in electrical impulses
Output
Response from CNS travels along nerves
Nerves coming off the brain are called
Cranial Nerves
The brain weighs around…
3 lbs
The average adult brain is roughly the size of what
2 fist together
The neuron takes in impulses from the ______.
dendrites at top of neuron
Meninges
3 layers of connective tissue membrane that encloses brain and spinal cord
The brain is commonly discussed in how many regions
4
AD changes the ______ thinking of the brain
AD changes the cognitive thinking of the brain
What does the brain feel like
cold oatmeal….so says Mrs.Massaro
What is the CNS protected by
Meninges
CSF
bones of cranium
spinal coloumn
Arachnoid Membrane
2cd meninge layer
looks like spider web
loosely attatches layers so CSF can move between
Fluid nourishes,cools,cushions & prevent shock and injury
spell the middle membrane in the meninges
A-r-a-c-h-n-o-i-d Membrane
PNS is made up of…
12 pairs of Cranial Nerves
31 pairs of Spinal Nerves
Keywords for Efferent Nerves
Stimulate
Motor
PD _____ neurons that deal with body movement
interupts
Function of ANS, what its made of, and aka
Function: Motor subdivision that controlls body activity automatically
Composed of neurons that regulate cardiac muscle, smooth muscle and glands
Maintains homeostasis
Called involuntary nervous system
KEyword for Afferent NErves
Sensory
THe parasympathetic system promotes what
normal digestion
elimination
conservation of body energy
ANS stands for
Autonomic Nervous System
name colored meninges
blue- dura mater
green- arachnoid membrane
yellow- pia mater
name what this is pointing to
thalamus
Basic Anatomy of PNS is…
Spinal nerves
Cranial Nerves
What neurontransmitters are linked to sleep cycles
Melatonin
Serotonin
The space between neurons is called
Synaptic Cleft
What is the PNS made of
Cranial and Spinal nerves
Action of Mylein Sheath
insulate neuron axons
waxy and fatty, makes impulses move fast through axons
name the highlighted
cerebrum
Whats the small parts of the axon terminal called, and the circle at the end of it
Terminal end branches
Synaptic Bulb
What neurotransmitter is linked to AD?
Spell it
A-c-e-y-t-l-c-h-o-l-i-n-e
