AP Chpt 5 #2
Terms
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- What is the order of the groups of the brain from least specailzed to most specialized (old-new)
- Brain stem- Cerebellum- Forebrain (Made up of Diencephalon (made up of Hypothalamus and thalamus) and Cerebrum(made up of basal nuclei and cerebral cortex))
- What layer are steallate cells found in?
- layer 4
- was is the largest portion of the brain?
- cerebral cortex
- fxn of stellate cells?
- Perception; inital processing of sensory input TO cortex
- what layer are pyramidal cells?
- thick layer 5
- What does grey matter consist of?
- neuronal cell bodies dendrites, glial cells
- what is in charge of primitive sensory processing?
- thalamus
- How long can the brain go without O2- then wat happens?
- 4-5 min or stroke
- Where do homones enter the brain to get to their site of action?
- hypothalmus
- Which fluid has a great exchange rate?
- CSF
- What is the oldest region of the brain?
- brain stem
- what colors is considered "wires"
- white matter
- Where can you find the diencephallon?
- tucked in cerebellum- top of the brain stem
- What is the fxn of the surronding of astocytes along the BBB capiliaries?
- signal them to "get tight" and participate in cross cell transport (k+)
- what is a part of the brain NOT subjected to BBB? why?
- hypothalmus-responsible for homeostatis ("samples" blood- then has to adjust) and NOT sealed with tight junctions
- "Information super high way"
- Corpus callosum
- What is hydrocephalus condition?
- CSF accumulates- inrease CSF pressure= head hurts
- how do brain capillaries and body capillaries differ?
- brain have tight juntions= only can pass THRO capillaries- not btw
- What two things does the dienchephalon house?
- Hypothalamus and thalamus
- wat two parts of the brain are made up of grey matter?
- cerebral cortex (thin outer) and basal nuclei (cept this is deep within the white matter)
- What does the cerebrum house?
- Basal nucei and Cerebral cortex
- what part of the brain is responsible for: FINAL sensory perception
- cerebrum
- what is the pressure in the head?
- 10 mm Hg
- Highest level of the brain?
- Cerebral cortex
- how are the six layers divided
- by diff fxn from different layer patters NOT different cells
- Concentration of K and NA in the CSF?
- lower in K- HIGH in Na
- corpus callosum
- connects two hemispheres of the cerebral cortex
- Fxn of hypothalamus
- homestasis
- What makes up white matter?
- meylinated nerve fibers (lipid=white)
- Cognition
- process of knowing/ awarness/judgement
- What is the only "fuel" the brain can use?
- glucose
- How often is CSF replaces?
- 3 times a day
- which fluid does not have a great exchange rate?
- blood
- how many nuerons?
- 100 billion
- How much CSF is there?
- 125-150 ml
- What forms the CSF?
- choroid plexues
- Two type of cells in the layers of the cerebral cortex?
- Stellate cells and pyramidal cells
- What color matter is considered the "computer"
- grey bc intergate neuronal inputs and out puts
- What is the smallest blood cessle?
- Capilaries
- What fluid do neurons and glial cells come into contact with?
- Intersitial fluid- not the CSF or blood
- what controls proper postion of the body in space?
- cerebellum
- what part of the brain is responsible for: VOLUNTARY initiation of movement?
- cerebrum
- what controlls learned skilled motor task? (dance routine)
- cerebellum
- what controls suboncious coordination of motor activities?
- cerebellum
- Where is the basal nuclie housed?
- cerebral cortex
- what is the more convoluted part of the brain?
- Cerebrum
- Vegetative fxn
- can do them unconsciously- respiration, circulation, digestion
- where is the cerebellum located?
- top rear ortion of the brain stem
- Fxn of brain stem?
- controls life sustaining processes (vegetative fxn)
- What do the choroid plexues look like?
- cauliflour on ependymal cells on the pia matter dips
- What makes up 80% of brain weight?
- cerebrum
- fxn of pyramidal cells
- controls output FROM cotrex TO skeletal mucles (down spinal cord to efferet motor nerons on skeletal muscles)
- What is the more advance part of the brain?
- Cerebrum
- How long can the brain go without glucose?
- 10-15 inutes or stroke
- Neurogloblin
- O2 binding protein like Hb
- Lowest level of the brain?
- Spinal cord
- what part of the brain is responsible for: personality
- cerebrum
- What three things make up the brain stem?
- midbrain pons medulla
- what part of the brain is responsible for:language
- cerebrum
- how many LAYERS are there (of the cerebral cortex) ?
- six VERTICLE
- What is not found in lower species?
- cerebrume
- what part of the brain is responsible for:concicous though
- cerebrum
- what part of the brain is responsible for: mind or intellect
- cerebrum
- Where does exchange btw blood and intersital fluid take place?
- across walls of capilaries