Chapter 3.2 Flashcards
6 major areas of the CNS
- cortex
- basal ganglia
- limbic system
- cerebellum
- brain strem
- spia; cord
Spinal cord
- connects to PNS
- protected by vertebrae
- spinal reflexes
what is the spinal cord protected by
vertebrae
the brain
- complex structure that demands huge amount of our bodily resources
- 1.4 kg of protein, fat, and fluid
3 major regions of the brain
- forebrain
- midbrain
- hindbrain
what is the forebrain compromised of
- cerebral cortex
- basal ganglia
- limbic system
Cerebral cortex
- folds of cortex
- outer layer of the brain (divided into two hemispheres)
what are the two hempispheres connected by
- the corpus callosum
Left Hemipshere is responsible for
- fine tuned language skills
- actions
Right hemispheres is responsible fore
- coarse language skills
- visuospaital skills
lobes of the cortex
- frontal
- parietal
- temporal
- occipital
Frontal lobe functions
- motor
- organization of other brain functions
- language
- memory
Parietal lobe functions
- touch
- temperature
- pain
- perception
Temporal lobe functions
- auditory processing
Occipital lobe functions
- visual processing
Basal Ganglia function
- critical for motor function
disfunction or damage to the basal ganglia can result in
involuntary movements
Limbic system function
- emotion
- memory
- learning
the limbic system is made up of
- amygdala
- hippocampus
- thalamus
- hypothalamus
function of the midbrain
- controls eye movements and coordination
what is the most important area of the midbrain
reticular activating system (RAS)
RAS function
- essential for conscious awareness and control of existence.
- also regulates sleep, wakefulness, and attention
the hindbrain is comprised of
- medulla
- pons
- cerebellum
divisions of the peripheral nervous system
- somatic nervous system
- autonomic nervous system
what are the two divisions of the autonomic nervous system
- sympathetic
- parasympathetic
both divisions of the autonomic nervous system work together to achieve
homeostasis
sympathetic nervous system
- activation function
- arousal
- fight or flight system
parasympathetic nervous system
- inhibits function
- decreases arousal
- feed and breed system
- rest and digest system
contraction of the pupil is done by what system
- parasympathitic
constricted bronchi is done by which system
parasympathetic
dialated pupils is done by what system
sympathetic
accelerated, strenghten heart beat is done by what system
sympathetic
relaxed bronchi is done by which system
sympathetic
slow heart beat is done by which system
parasympathetic
stimulated activity is the digestive organs is done by which system
parasympathetic
contraction of blood vessles is done by which system
sympathetic
inhibited activity is the digestive organs is done by which system
sympathetic
dialated blood vessels is done by which system
parasympathetic
somatic nervous system function
- voluntary muscle activation
