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Definition
| outer most layer of brain |
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Definition
| a trait that increases the probability that an individual will leave offspring in subsequent generations |
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| a change inthe nucleotide sequence of a gene as a result of unfaithful replication |
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| size of brain in relation to body weight |
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| cerebral cortex made up of six distinct layers |
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Definition
| mitotic division of non neuronal cells to produce neurons |
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Definition
| movements of nerve cells to establish nerve cell populations |
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Definition
| cells into distinctive types of neurons |
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Definition
| creation of nerve connections as axons and dendrites grow |
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Definition
| selective death of nerve cells |
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Definition
| loss and development of synapses to refine conections |
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Definition
| telencephalon- thalamus and hypothalamus |
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| metencephelon- cerebellum, pons, medulla |
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Definition
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Definition
| a substance that affects the growth of neurons in spinal ganglia |
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Term
| what guides brain development |
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Definition
| genes, neurotropic factors |
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Term
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Definition
| external substance that effects brain development |
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Definition
| physical event that triggers a sensory response |
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Term
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Definition
| touch and pain, vestibular, auditory, visual, taste, olfaction |
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Term
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Definition
| hairy, glabrous, mucocutaneous |
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Definition
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Definition
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Definition
| Dermis-living, epidermis-dead outerlayer |
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Term
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Definition
| respond to pressure on skin surface. Slow adapting-tonic- action potential drops slowly. Fast adapting- phasic- action potential drops rapidly |
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Definition
| respond to changes in temperature |
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Definition
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Term
| How does sensory info get to brain? |
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Definition
| face sensory info goes to brain directly, other info goes through spinal cord to brain |
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Definition
| light touch, travels up same side of body |
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Definition
| temperature, pain, deep pressure. travels laterally through body |
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Term
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Definition
| a strip of skin innervated by a particular spinal root |
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Term
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Definition
| cervical-8, Thoracic- 12, Lumbar-5, Sacral-5. coccygeal. |
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Term
| path of sensory infomation into brain |
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Definition
| brainstem- thalamus-primary somatosensory cortex |
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Term
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Definition
| a body map for the layout of the skin and some internal regions along the somatosensory cortex. |
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Definition
| body sensation, touch and pain. |
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Definition
| area that is stimulated when pain is present |
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Term
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Definition
| psychogenic- placebo, hypnosis. Pharmacological-opiates, cannabinoids. Stimulation- acupuncture. Surgical-root severing |
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Term
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Definition
| Cochlea receptor cells convert vibrations into waves of fluid, hair cells move fluid to basilar membrane which convert fluid into electrical signals |
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Term
| Two streams of auditory processing (where, what) |
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Definition
| Dorsal- parietal lobe, involves where sound comes from. Ventral- temporal lobe, what sound is. |
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Definition
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| disorder of outer/middle ear-prevent vibrations from travelling- cochlear implants help |
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Definition
| auditory nerve fibers dont activate- hearing aids help |
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Definition
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Definition
| contradicting sensory messages between vesibular and visual information-vertigo |
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Definition
| salty, sweet, sour, bitter, umami |
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Definition
| taste receptor cells on tongue |
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Definition
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Definition
| receptors that lines the nasal cavity |
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Definition
| anterior of brain, processes smells |
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