Test 2
Terms
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- target cell
- cells that respond to contact with a hormone by activating some bodily process typically by stimulating enzymes
- axon terminals
- branches at the end of axons where the commucation with another cell occusa across a synapse
- central nervous system (CNS)
- neurons and nerves in the spinal cord that connect brain to the PNS
- hormone
- chemical messengers that travel in the bloodstream to different target cells throughout the body
- hippocampus
- learning, processing & storing memories
- cerebral hemispheres
- right & left- info enters in on one side and travels to the other where it is processed
- dendrite
- recieves messages from the cell
- cerebral cortex
- outer layer of the cerebrum
- parasymathetic nervous system
- calming system
- myelin sheath
- covering around axons to increase effectiveness of neurotransmission
- nerve
- bundle of axons
- flow of info in the NS
- to the brain- within the brain-from the brain (PNS-CNS-PNS)
- agonist
- chemical that boosts the effect of a neurotransmitter
- autonomic nervous system
- self regulated acton of organs and glands
- limbic system
- set of emotions, memory and motivation
- synapse
- the junction between the axon terminial of the sending cell and the recptor sites on the recieving cell
- neuron
- individual cells in the nervous system
- sympathetic nervous system
- arousal system
- endrocrine system
- other communication system; secretes hormones into the bloodstream
- axon
- sends messages away from the cell
- the nervous system
- system in the body that communications information and regulates the bodily functions
- neurotransmitter
- a chemical that travels across a synapse and communicates information from once cell to another
- reuptake
- process of presynaptic cells taking unused NTs from the synapse back in for recycling
- antagonist
- chemical that blocks the effect of neurotransmitter
- endrocrine gland
- glands that secrete hormones
- enzyme
- a protein that triggers & speeds up chemical reactions
- somaticsym nervous system
- voluntary movements of musculoskeletal system
- homeostasis
- the bodies internal steady state
- peripheral nervous system (PNS)
- the neurons and nerves that connect the CNS to the rest of the body
- role of the brain
- nuerons and nerves that analyze, interpret and respond
- brain plasticity
- brain's capacity for modification of function and structure, especially at the synaptic level
- receptor sites
- sites n dendrites that each specialized to recieve a certain kind of neurotransmitter
- corpus callosim
- bundle of nerves that connect the right & left hemispheres and allow them to connect
- gland
- an organ that secretes materials (tear ducts, sweat glands)