Response to Hormone by Target Cell A. Mechanisms of Stimulation 1. Specific membrane receptors are necessary for hormone to act on cell. In some cases, hormones are endocytosed along with receptors. Then the hormone is detached from the receptor in vesicles in the cells, and receptor down-regulation or receptor recycling can occur.
Target cell possesses cytoplasmic receptors or nuclear receptors.
If receptors aren't already in the nucleus, they're transported there where they function as transcription factors. The common link between the nervous system and the endocrine system. A. Neurosecretory neurons 1. Found in all animals 2. Operation a. Receive neuronal inputs.