10 Questions
What is the function of ligands in the second messenger system?
They bind to receptors on target cells
What is an example of autocrine signaling?
Insulin released by beta cells of the pancreas
Which type of signaling involves the release of molecules that act on another cell type in close proximity?
Paracrine
What is an example of paracrine signaling?
Histamine released by ECL cells
Which form of signaling is the fastest?
Autocrine
What is a characteristic of juxtacrine signaling?
It requires direct cell-to-cell contact
Which type of signaling involves the release of neurotransmitters at synapses?
Neurocrine signaling
What is a key feature of endocrine signaling?
It occurs over long distances and is slower compared to other forms
Which form of signaling combines the functions of the nervous and endocrine systems?
Neuroendocrine signaling
What does neuroendocrine signaling involve?
Release of neurohormones by neurosecretory cells
Test your knowledge on cell communication and the second messenger system. Learn about ligands, receptors, and the various signaling pathways involved in autocrine, paracrine, neurocrine, and endocrine signaling.
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