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| About how many neurons does the brain contain? |
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Term
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Definition
CEREBRUM
- paired cerebral hemispheres seperated by the longitudinal fissure
- executive function
- conscious thought processes, intellectual functions, memory storage and retrieval, complex motor patterns originate in the cerebrum
- working memory, attention, problem solving, verbal reasoning
[image] |
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Definition
| separates the two cerebral hemispheres |
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Term
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Definition
| deep portion of the brain that connects cerebrum to brain stem[image] |
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Term
| What are the 3 subdivision of the diencephalon? |
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Definition
- epithalamus
- right and left thalamus
- hypothalamus
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Definition
| contains the hormone secreting pineal gland an endocrine structure |
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Definition
| sensory information relay and processing centers |
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Definition
| floor of the diencephalon; a visceral control center, coordination of endocrine system, emotions, autonomic function, hormone production |
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| regulates sleep-wake cycle, reduces libido |
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MIDBRAIN
- process visual and auditory information and coordinate direct reflexive somatic motor response to these stimuli
- maintenance of conciousness
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Term
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Definition
- inferior to the mesencephalon
- contains nuclei involved in both somatic and visceral motor control
- connects cerebellum to brain stem
- [image]
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Definition
- lies posterior to the pons and inferior to the cerebral hemispheres
- planning, executive function
- [image]
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Definition
- maitenance of balance and eye movements
- proprioception
- posture
- [image]
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Definition
- where the spinal cord connects to the brain stem
- relays sensory information to the thalamus and to other brain stem centers
- also contains major centers concerned with regulation of autonomic function, such as heart rate, blood pressure, and digestive activitoes
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Term
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Definition
- fluid-filled cavities within the brain
- filled with cerebrospinal fluid and lined by ependymal cells
- [image]
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Term
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Definition
| no connection between lateral ventricles but both communicate with the diencephalon ventricle through the interventricular foramen |
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Term
| Where is the 3rd ventricle? |
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Definition
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Term
| where are the first two ventricles? (lateral ventricles) |
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Definition
| in either cerebral hemisphere |
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Term
| Where is the fourth ventricle? |
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Definition
| between the pons and cerebellum |
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Term
| blood-brain barrier (BBB) |
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Definition
| neural tissue in the CNS has an extensive blood supply, yet it is isolated from the general circulation; maintains a constant environment |
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Definition
completely surrounds and bathes the exposed surfaces of the central nervous system
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Term
| What are the 3 functions of cerebrospinal fluid? |
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Definition
- cushioning delicate neural structures
- supporting the brain
- transporting nutrients, chemical messengers, and waste products
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Definition
- produces CSF at a rate of about 500mL/day
- the entire volume of CSF is replaced roughly every 8 hours
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Definition
| includes nuclei and tracts along the border between the cerebrum and diencephalon |
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Term
| What are the functions of the limbic system? |
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Definition
- establishment of emotional states and related behavioral drives
- linking concious, intellectual functions of the cerebral cortex with the unconcious and autonomic functions of other portions of the brain
- facilitating memory storage and retrieval
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