BRAINCAKECell Signalling
At a cellular level, communication takes place through cell signalling.
One cell releases a chemical which has an effect on another cell.
The second cell is known as the target cell.
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Key terms in this lesson
- hormone
- A chemical messenger, secreted by an endocrine gland directly into the blood, that travels to target cells bearing complementary receptors and brings about a response.
- insulin
- A hormone secreted by the beta cells of the islets of Langerhans in response to a rise in blood glucose concentration, which lowers blood glucose by stimulating cells to take up and use or store glucose.
More in Neuronal Communication
- Co-ordination
- Co-ordination Systems
- The Nervous System
- Neurones
- Sensory Neurones
- Motor Neurones
- Myelinated Neurones
- Sensory Receptors
All 38 lessons in Neuronal Communication · All AQA A-level Biology topics