How long does synaptic transmission take on average in milliseconds?

Prepare for the Arizona State University BME100 Biomedical Engineering Midterm Exam. Enhance your skills with quizzes, flashcards, and detailed explanations. Ace your exam!

The average time for synaptic transmission is typically around 2 milliseconds. This brief duration is crucial for the efficient functioning of the nervous system, allowing for rapid communication between neurons. During synaptic transmission, an action potential triggers the release of neurotransmitters from the presynaptic neuron, which then cross the synaptic cleft and bind to receptors on the postsynaptic neuron. This process involves several steps, including the diffusion of neurotransmitters and receptor activation, which altogether contribute to the relatively short, yet significant, timing of approximately 2 milliseconds for synaptic transmission. This rapid signaling is important for processes such as reflexes and real-time responses to stimuli in the body.

In the context of the other time options, while 1 millisecond may seem plausible, it is generally too quick for the various biochemical interactions involved. Times like 5 or 10 milliseconds are longer than average for synaptic transmission and would overall slow down neural communication, not accurately reflecting the efficiency observed in biological systems. Thus, 2 milliseconds stands out as the most accurate average time for synaptic transmission.

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