550256
Description
Mind Map by Sophie Barrett, updated more than 1 year ago
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Created by Sophie Barrett
about 10 years ago
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Heart Myocytes
- Stimulation from parasympathetic nervous system
- Acetylcholine acts on
metabotropic, muscarinic
receptors in the heart
- G-Protein is activated
- Effector protein is a K+ ion
channel (stimulated to open)
- K+ ions flow out of the cell
(down their concentration
gradient)
- Increases negativity inside the
cell (hyperpolarisation)
- Leads to decreased contraction
- Leads to decreased contraction
- Increases negativity inside the
cell (hyperpolarisation)
- K+ ions flow out of the cell
(down their concentration
gradient)
- Effector protein is a K+ ion
channel (stimulated to open)
- G-Protein is activated
- Acetylcholine acts on
metabotropic, muscarinic
receptors in the heart
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