18 Questions
Which of the following is NOT a basic method of cell-to-cell communication?
Synaptic transmission
What type of cell-to-cell communication involves direct cytoplasmic transfer of signals between adjacent cells?
Gap junctions
Which of the following is an example of a local communication method?
Chemicals diffusing through the extracellular fluid
What type of cell-to-cell communication involves surface molecules on one cell binding to surface molecules on another cell?
Juxtacrine communication
Which of the following is responsible for most communication within the body?
Chemical signals secreted into the extracellular fluid
Which type of cell-to-cell communication involves a combination of electrical signals and chemical signals (hormones)?
Long-distance communication
Which type of intercellular communication involves the release of neurotransmitters at synaptic junctions?
Neural communication
What is the mechanism of juxtacrine communication?
Binding of a ligand on one cell's surface to a receptor on the next cell's surface
Which type of intercellular communication involves the diffusion of products from cells to affect neighboring cells?
Paracrine communication
Which type of communication involves the binding of a messenger to receptors on the same cell that secreted it?
Autocrine communication
Which type of intercellular communication involves the release of hormones into the bloodstream?
Endocrine communication
What is the function of a signal transduction pathway?
To convert a signal on a cell's surface into a specific cellular response
Which type of signaling involves the diffusion of chemicals through the extracellular fluid over a short distance?
Paracrine signaling
Which type of signaling involves the release of hormones into the bloodstream for action at distant target cells?
Endocrine signaling
What is the process by which a target cell responds to a chemical signal?
All of the above
What happens to the number of active receptors on a target cell when there is an excess of the chemical messenger?
Downregulation
Which type of signaling involves the release of neurotransmitters from a neuron across a synapse to a target cell?
Synaptic signaling
What is the term used to describe the process by which a target cell responds to a chemical signal from itself?
Autocrine signaling
Test your knowledge on cell signaling and intercellular communication in the context of physiology and the essential role it plays in coordinating cellular activities, maintaining homeostasis, and controlling growth and development. Explore different types of signals including physiological, electrical, and chemical signals.
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