Term
| ECF ( Extracellular Fluid ) |
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Definition
| Fluid around, between, and outside cells. Makes up 1/3 or 20% of the body weight. Contains 2 components: 16% plasma and 4% interstitial fluid. Major cation is Na. |
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Term
| Majority of body water is extracellular? |
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Definition
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Term
| ICF ( Intracellular Fluid) |
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Definition
| Fluid inside cells. Makes up 2/3 or 40% of the body weight. Major cation is K. |
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| Does NOT require a carrier |
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| requires a carrier protein |
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| spontaneous net movement of water through a semi-permeable membrane. Area of high concentration to an area of low concentration |
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Definition
| pressure in a fluid due to # of dissolved particles |
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| most abundant solute molecules and play a principal role in governing body water distribution and content |
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| Less than 300 mOs, cell swells and could rupture, water drawn to higher osmotic pressure |
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Definition
| Equilibrium, no net water movement |
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Definition
| More than 300 mOs, crenation (or cell shrinkage ) occurs |
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| Rate of Dehydration that can cause death |
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Definition
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Term
| 2 parts of nervous system |
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Definition
| CNS ( central nervous system ) and PNS ( peripheral nervous system ) |
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Term
| CNS ( central nervous system ) |
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Definition
| Contains brain and spinal cord |
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Term
| PNS ( peripheral nervous system ) |
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| directly connects sensory and motor neurons ( REFLEXES ) |
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Definition
| membrane potential becomes less negative |
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Definition
| membrane potential returns to resting value |
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Definition
| membrane potential becomes more negative than resting value |
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Term
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Definition
| minimum intensity of a stimulation that will cause action potential |
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Term
| Absolute Refractory Period |
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Definition
| cell incapable of generating a new action potential with addition of a second stimulus |
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Term
| Relative Refractory Period |
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Definition
| More difficult to generate new action potential with addition of second stimulus |
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Definition
| More abundant than neurons, 90 % of cells in the human brain. Do not generate or conduct action potential , Dont form synapses, several types of cells |
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Definition
| predominant type of synapse that occurs in the body |
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Definition
| gap junctions through which ions freely follow, travel very fast, occur quickly with coordination. Occurs in the cardiac cells |
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Definition
| Presynaptic cell, post synaptic cells, synaptic cleft |
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Definition
| space between presynaptic and post synaptic cell |
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Term
| Postsynaptic cell/ Post Ganglionic |
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Definition
| may be a neuron, muscle cell, or endocrine cell. |
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Term
| Presynaptic Cell/ Pre Ganglionic |
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Definition
| Makes and releases chemical near axon terminal |
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Definition
| Synapse between a motor neuron and a skeletal muscle cell |
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Definition
| Predominant Neurotransmitter, found in skeletal muscles, CNS, and autonomic neurons. Excitatory effect |
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Definition
| Gaba amino butyric acid, located in the CNS, Inhibitory effect |
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Definition
| Located in CNS, can be excitatory or inhibitory, related to parkinsons |
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| Released from adrenal glands (adrenaline ) , located in CNS, PNS, cardiac and smooth muscle, can be excitatory or inhibitory |
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| located in CNS, cardiac and smooth muscle, mainly excitatory |
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| located in CNS, antidepressant ( zoloft ) , reuptake inhibitors- prevents serotonin from being reabsorbed |
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Definition
| Fight or Flight, Neurotransmitter- nonadrenaline, Adrenergic System |
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Term
| Parasympathetic Motor System |
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Definition
| Relaxing responses ( normal ), Neurotransmitter- acetylcholine, cholinergic system |
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Term
| Nerve root origin of Sympathetic Neurons |
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Definition
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| Nerve root origin of parasympathetic neuron |
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Definition
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| Cluster of nerve cell bodies outside CNS |
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