Endocrine secretion

 

Endocrine cells and paraneurons release their secretions in the following manner

Synaptocrinia- this is the release of contained peptides from paraneurons into synaptic clefts usually to reach neural elements in the postsynaptic membrane, such as neurons. They form a synaptic cleft with a bona fide neuron.

Ventriculocrinia: These release their secretions into the brain ventricle- example is pinealocytes of the pineal gland.

Mesocrinia: Release into a closed circulation such as portal circulation

Paracrinia: Local release which acts on the vicinal target cell.

Endocrinia: This is the classical release into the systemic circulation as in most large endocrine (ductless) organs.

 

 

 

 

 

 

 

 

 

 

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