NERVOUS SYSTEM_PPT 2 (LEC) Flashcards
Major communication link between the brain and the spinal nerves
spinal cord
ENUMERATE
31 pairs of the spinal nerve
5 lumbar
5 sacral
12 thoracic
8 cervical
1 coccyx
unconscious and involuntary responses to stimuli
reflexes
- it removes the body from painful stimuli
- keep the body from sudden falling
somatic reflex
responsible for maintaining variables within their normal ranges like
- blood pressure
- water intake
- blood CO2 levels
autonomic reflex
FUNCTIONAL UNIT of the nervous system
reflex arc
lumbar and sacral plexuses are often considered together as the ________________
lumbosacral plexus
control center for many body functions
the brain
the brain consists of the:
brainstem
cerebellum
diencephalon
cerebrum
brainstem consist of:
medulla oblongata
pons
midbrain
connects the spinal cord and cerebellum to the remainder of the brain
brainstem
TRUE OR FALSE
damage to small areas of the brainstem can cause death, whereas damage to large areas of the cerebrum or cerebellum do not
TRUE
regulate heart, blood vessels, breathing, swallowing, hiccupping, balance and coordination
medullary nuclei
regulate breathing, swallowing, balance, chewing and SALIVATION
pontine nuclei
these are tracts that controls voluntary muscle movement
pyramids
what is the function of substantia nigra and red nucleus?
regulate body movements
maintains consciousness and regulates the sleep-wake cycle
reticulating activating system
3 parts of cerebellum
flocculonodular lobe
vermis & medial part of the lateral hemisphere
lateral hemisphere
controls balance and eye movement
flocculonodular lobe
control posture, locomotion and fine motor coordination
vermis and medial part of the lateral hemisphere
involve with planning, practice and learning complex movements
lateral hemispheres
diencephalon is consist of __________ and ____________
thalamus
hypothalamus
it functions as an integration center.
all sensory input that reaches the cerebrum, except for the sense of smell, synapses here
thalamus
involved in emotions and pain reception
thalamus
main visceral control center of the body and is vitally important to overall body homeostasis
hypothalamus
ridges: gyri
grooves:________________
sulci/ fissures
involved in voluntary motor functions, motivation, aggression, sense of smell and mood
frontal lobes
major sensory areas receiving sensory input such as touch, pain, temperature, balance, and taste
parietal lobes
visual centers
occipital lobes
evaluate smell and hearing input and involved in memory and abstract thought and judgement
temporal lobes
important in controlling motor functions
basal nuclei
includes parts of the cerebral cortex, basal nuclei, the thalamus, the hypothalamus, and the olfactory cortex
limbic system