Physio - cell physiology Flashcards
Tight intercellular junction
Desmosomes
Macula adherens
Bridge for sharing of small molecules between cells
Gap Junction
Barrier to movement of proteins across membranes
Tight Junction
Zonula Occludens
Increased surface area for contact
Zonula Adherens
Equilibrium potential of Calcium
+120
Equilibrium potential of Sodium
+65
Equilibrium potential of Potassium
-85
Equilibrium potential of Chloride
-85
Macroglia that forms the myelin in the PNS
Schwann cells
Macroglia that forms the myelin in the CNS
Oligodendrocytes
Tissue macrohpage that act as a scavanger, removing debris in the nervous system
Microglia
Astrocytes in the white matter
Fibrous astrocytes
Astrocytes in the gray matter
Protoplasmic astrocytes
Macroglia that send processes that envelop synapses and help form the BBB
Astrocytes
TTriggers REM sleep
Acetylcholine
Decreased levels in Huntington’s dementia and Alzheimer’s dementia
Acetylcholine
Neuromodulator in the CNS
Neurotransmitter in the PNS
Norepinephrine
Primary neurotransmitter from post ganglionic sympa neurons
Norepinephrine
Secreted in the substantia nigra
Dopamine
Found in the median raphe of the brain stem
Serotonin
Inhibitory neurotransmitter, vasodilator
Nitric Oxide
Relieves effects of bee sting by decreasing contraction of airway smooth muscles
Epinephrine
Greater beta 2 action than NE
Epinephrine
Halflife of NE
2 mins
Secreted by hypothalamus to inhibit prolactin
Dopamine