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Stack #63878
| Question | Answer |
|---|---|
| Gap Junction | cells connected that allows for a signal to be conducted from one cell to another |
| Paracrine | a messenger that stimulates a cell that is close to it |
| Autocrine | a messenger that stimulates itself |
| hormone | released from endocrine cells |
| Neurotransmitter | released into interstitial fluid from neurons |
| Neurons | nerve cells |
| cytokine | released by white blood cells |
| proteins are packaged by the... | golgi apparatus |
| carrier proteins | proteins that carry lipophilic hormones thru the blood stream |
| Lipophilic | fat soluble |
| lipophobic | water soluble |
| "g" protein | uses a 2nd messenger |
| tyrosine | used by the thyroid |
| cAMP | 2nd messenger involved in "g" protein linked receptors |
| synaptic vessicles | store neurotransmitters |
| synapse | connection between 2 neurons |
| cortisone | steroid |
| catacholamines | EPI, Norepi, dopamine |
| adenalyte cyclase | Activated by a "g" protein linked receptor |
| Adenalyte cyclase | converts ATP to cAMP |
| Protein Kinase | enzyme that activates a change in the phys of a cell |
| Homeostasis | controlled by the Nervous system and endocrine system |
| Amino Acids | Function as neurotransmitters in the brain and spinal chord - water soluble - lipophobic |
| Amines | modified amino acids - catacholamines, seratonin, thyroid and hisamine |
| Peptide and Protein messengers | chains of amino acids - lipophobic |
| steroid | lipid soluble messenger, made in smooth ER |
| Eicosanoids | Paracrines, prostoglandins, leukotrines & thromboxins |
| Amino acid synthesis | synthesized by glucose, stored until needed in vessicles |
| Amine synthesis... | synth in cytosol in rough ER, stored in vessicles packaged by Golgi Apparatus |
| Eicosanoid synthesis | Synth on demand, cannot be stored |
| Peptide & protein synthesis | stored until needed |
| Steroid synthesis | Cannot be stored, synthesized on demand |
| 1/2 life of a lipid | hours |
| 1/2 life of a lipophobic | minutes |
| 1/2 life | amount of time that it takes for 1/2 of the substance to degrade |
| signal transduction | where the receptors are on the cell membrane or inside it |
| Up regulation | more response needed = increased # of working receptors |
| down regulation | too much chemical = decreased # of working receptors |
| Paracrine | communicate with a neighbor cell |
| Autocrine | Acts on itself |
| Hormone | chemical released from an endocrine cell |
| Neurohormones | released by nerve impulses |
| cytokines | released from white blood cells |
Created by:
goodbunn