Anatomy 10/10
Terms
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- When are there functional neurons in a fetus?
- -by 14 days, a day or so after implantation, there are functional neurons
- When does a 3 section brain develope?
- 2 weeks after the neurons begin to function.
- When does a 5 section brain develope?
- 1 weeks after 3 section brain developes, 5 weeks altogether
- What's orientation to the nervous system?
- your position relative to the environment
- What's co-ordination to the nervous system?
- The organization of a response.
- What's assimilation to the nervous system?
- Gathering of information into thought or perception.
- What's the instinct or emotional behavior of the nervous system?
- It's how we act or feel towards the environment or response.
- What are the 4 functions of the nervous system?
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1. orientation
2.co-ordination
3.Assimilation
4.Emotional behavior - What do convolutions do?
- -they create more surface area
- What are the Gyrus?
- ridges on brain surface
- What are the sulcus?
- valleys b/t gyra
- What is a fissure?
- deep and/or wide sulcus
- What is the central sulcus?
- -sulcus that starts at the top of the brain and ends at the lateral fissure
- What are the 5 lobes of the cerebrum?
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1. frontal
2. Parietal
3. Occipital
4. Temporal
5. Insula - 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 - 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 - Where is the occipital lobe located and it's function?
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-parietoccipital fissure to posterior
-receive and analyse visual stimuli - 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) - Where is the Insula located and its functions?
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-interior of brain
-smallest lobe
-gustatory center (taste stimuli)
-emotion
-general memory - What is the corpus callosum?
- -largest and most principle area of major communication b/t hemispheres
- What are ventricles?
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-hollow spaces
-filled with CSP - 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 - What is the function and location of the pre-central gyrus?
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-motor association area
-last gyrus of frontal lobe - 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 - 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 - What is the order of impulse travel for speech?
- 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
- What are cranial nerves?
- -nerves to and from brain
- What are the primary cortex areas?
- -places where impulses arrive
- What are the Association areas?
- -places where impulses are interpreted
- How do impulses travel through the Occipital lobe?
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- visual images received in cortex
-interpreted in association area - How do impulses travel through the temporal lobe?
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-the auditory cortex receives sound impulses
-the association area interprets sounds - 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 - How do impulses travel through the Frontal lobe?
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-impulses from parietal lobe arrive in pre-motor cortex
-initates motor response - What does the cerebellum do?
- -coordinates motor impulses
- What is the Arculate femiculas (bundle)?
- -runs from gnostic to brocas area
- 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 - 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 - 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 - What does cerebal nuclei do?
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-walking
-swinging of arms while wlaking
-blinking eyes
-breathing - What is muscle tone?
- -minimal nerve stimulation required to keep relaxed muscle functional