nervous Flashcards
what is the middle of a nerve called
axon
what is the end of a nerve called
terminal branches
what is the cell body called
soma
name the branches that extended from cell body
dendrites
name the 2 components of the central nervous system
brain and spinal chord
name the 2 component of the nervous system
central nervous system and peripheral nervous system
name the 3 component of the peripheral nervous system
cranial nervous, spinal nerves and ganglia (collection of neuronal cell bodies)
name the 2 functional divisions of the central nervous system
somatic and autonomic
what are the differences between somatic and autonomic nervous system
somatic=voluntary
autonomic = involuntary
what is the autonomic nervous system further subdivided into
sympathetic and parasympathetic
what does CSF stand for
Cerebral spinal fluid
what is the protective layer of the brain called
the meninges
how may lateral ventricles are found in the brain
2 lateral ventricles
which ventricle is the smallest 3rd or 4th
4th ventricle is the smallest
what is choroid plexus and where are they found
found in ventricles and produce CSF
where does CSF seep out of
arachnoid granulations
name 4 functions of CSF
- protective medium for brain ‘flotation’
- protective cushioning - trauma
- removal of metabolites
4.provides stable ionic environment
name the 4 lobes of the brain
frontal, parietal, temporal and occipital
what are the names of the folds in the brain
gyrus
what are the depressions and creases in the brain called
sulcus
what is the term for a deep sulcus
fissures
name the 2 major gyrus
pre central gyrus
post central gyrus
name the 2 major sulcus
central sulcus
lateral sulcus
what is the grey matter found in brain
cell bodies of neutrons and support cells
what is the white matter found in the brain
axons and fibre tracts
name 4 structural components of grey matter
- neurons
- glial cells
- blood vessels
- no major ( long ) fibre tracts
name a component of white matter and its function
- fiber tracts
2.connects different areas of the brain - information super highway
name 3 functions of frontal lobe
planning, emotion, mood, behaviour, motor function, smell
parietal lobe functions
touch, pain, temporature and sensation
temporal lobe 3 functions
hearing, language, memory
name a function of occipital lobe
vision
name 2 functions of cerebellum
balance and coordination
where is the insula and what is it
insula is a Gyro that is hidden behind temporal lobe
what is the function of insula
concious awareness, gustation, cognitive emotional processing, audio-visual integration, interception, homeostatic error detection
what is the role of the motor complex
motor control of skeletal muscle
name 2 inputs for the sensory cortex
skin and proprioceptors
name the role of visual cortex
visual recognition
name 2 roles of auditory complex
auditory memory and sound recognition
name 2 roles of brooks area
motor control of speech and speech planning (stutter)
name 3 roles of the wernickes area
language, reading/listening and word recognition
explain the language loop model
1.visual cortex, 2.wernickes area and then 3. brooks area
this in loops back to start and repeats
define term somatotpy
body maps onto brain surface (the body is controlled by different areas of the brain and this can be mapped out onto the surface of brain)
name 4 major functions of the brainstem
control of sleep and consciousness, modulation of pain, regulation of cv and respiratory system, somatic motor control
name 3 parts of the brain stem
medulla, pons, midbrain
what is the reticulum formation
a formation of nuclei that control breathing
what are 4 functions of the cerebellum
control balance
influence posture and muscle tone
coordination of movement
motor-learning
what is the purpose of myelination
this allows action potential to jump speeding up process
how do synapses work
action potential travels to preglanionic synapse, ACh is release, travels across synapse and then action potential is carried on through non-myelinated axon to effector muscle
what does ACh stand for
Acetylcholine
what are the ways to remember how parasympathetic and sympathetic are different
parasympathetic- rest&digest
sympathetic- fight and flight
what is a tissue that is only sympathetic
hair follicle
name a tissue that is mainly sympathetic
blood vessels