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40 Cards in this Set
- Front
- Back
When are there functional neurons in a fetus?
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-by 14 days, a day or so after implantation, there are functional neurons
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When does a 3 section brain develope?
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2 weeks after the neurons begin to function.
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When does a 5 section brain develope?
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1 weeks after 3 section brain developes, 5 weeks altogether
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What's orientation to the nervous system?
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your position relative to the environment
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What's co-ordination to the nervous system?
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The organization of a response.
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What's assimilation to the nervous system?
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Gathering of information into thought or perception.
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What's the instinct or emotional behavior of the nervous system?
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It's how we act or feel towards the environment or response.
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What are the 4 functions of the nervous system?
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1. orientation
2.co-ordination 3.Assimilation 4.Emotional behavior |
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What do convolutions do?
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-they create more surface area
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What are the Gyrus?
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ridges on brain surface
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What are the sulcus?
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valleys b/t gyra
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What is a fissure?
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deep and/or wide sulcus
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What is the central sulcus?
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-sulcus that starts at the top of the brain and ends at the lateral fissure
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What are the 5 lobes of the cerebrum?
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1. frontal
2. Parietal 3. Occipital 4. Temporal 5. Insula |
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Where is the Frontal lobe located and what is its function?
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- located from front of brain to cnetral sulcus and the top to lateral fissure
- contains cognitive ability, personality, most memory, and initiates motor impulses |
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Where is the Parietal lobe located and its function?
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-Located from central culcus to parietoccipital fissure adn top to lateral fissure
-receives most sensory information |
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Where is the occipital lobe located and it's function?
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-parietoccipital fissure to posterior
-receive and analyse visual stimuli |
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Where is the temporal lobe located and its functions?
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-below lateral fissure and around ear
-most visual memory -center for olfaction (receive and analyze smell) |
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Where is the Insula located and its functions?
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-interior of brain
-smallest lobe -gustatory center (taste stimuli) -emotion -general memory |
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What is the corpus callosum?
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-largest and most principle area of major communication b/t hemispheres
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What are ventricles?
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-hollow spaces
-filled with CSP |
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What is the function and location of the post-central gyrus?
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-sensory association area
-first gyrus of parietal lobe -initiates impulses to skeletal muscles |
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What is the function and location of the pre-central gyrus?
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-motor association area
-last gyrus of frontal lobe |
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What is the Brocas Area and which lobe does it exist in?
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-info transferred from wernicke area and decides which muscles to use to express speech
-exists in the frontal lobe |
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What is the Wernicke's area and its location?
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-collects sensory impulses and feeds info into the gnostic area, which chooses the words and order for speech.
-exists mostly in the temporal lobe but also in the occipital and parietal lobe |
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What is the order of impulse travel for speech?
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Wernicke Area (gnostic area)---->arculate femiculus--->Brocas Area----> pre-central gyrus----> cerebellum---->uses diaphram to exhale for speech and moves tongue and mouth to produce it
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What are cranial nerves?
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-nerves to and from brain
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What are the primary cortex areas?
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-places where impulses arrive
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What are the Association areas?
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-places where impulses are interpreted
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How do impulses travel through the Occipital lobe?
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- visual images received in cortex
-interpreted in association area |
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How do impulses travel through the temporal lobe?
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-the auditory cortex receives sound impulses
-the association area interprets sounds |
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How do impulses travel through the parietal lobe?
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-most bodily impulses arrive in the somatosensory cortex
-analyzed in association area -impulses sent to frontal lobe |
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How do impulses travel through the Frontal lobe?
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-impulses from parietal lobe arrive in pre-motor cortex
-initates motor response |
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What does the cerebellum do?
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-coordinates motor impulses
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What is the Arculate femiculas (bundle)?
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-runs from gnostic to brocas area
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What's the anatomy of the internal brain?
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-cerebral cortex
-grey matter -white matter -association tracts -commissural tracts -projection tracts -decussation tracts |
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What is grey matter made up of, its functions, and its location?
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-consists of nerve cell bodies and unmyelinated dendrites and axons and cerebral nuclei
-carries emotions, memory, and intelligence |
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What is white matter made up of, its functions?
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-consists of myelnated axons
-made of lipid -omega 3 fatty acids make up myelin -also includes corpus collosum -cerebral nuclei exist here but actually greay matter -does impulse transmission |
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What does cerebal nuclei do?
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-walking
-swinging of arms while wlaking -blinking eyes -breathing |
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What is muscle tone?
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-minimal nerve stimulation required to keep relaxed muscle functional
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