Chapter 48: Neurons, Synapses, and Signaling.
Campbell Biology Chapter 48: Neurons, Synapses, and Signaling Chapter Exam Instructions. Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip.
Figure 48.4. Nucleus. Dendrites. Stimulus. Axon hillock. Cell. body. Presynaptic. cell. Signal. direction. Axon. Synapse. Neurotransmitter. Synaptic terminals.
Cell Signaling in Animals: Local Distance Paracrine signaling: when a secreting cell discharges molecules of a local regulator on nearby target cells, such as a growth factor, into the extracellular fluid. Synaptic Signaling: when a nerve cell releases neurotransmitter molecules.
The basic kinds of connections between neurons are chemical synapses and electrical gap junctions, through which either chemical or electrical impulses are communicated between neurons. Neural networks are primarily made up of axons, which in some cases deliver information as far as two meters. Networks formed by interconnected groups of neurons are capable of a wide variety of functions; in.
This is the post-synaptic neuron. And the space between the two neurons, between this axon and this dendrite, this is called the synaptic cleft. It's a really small space in the terms of-- so what we're going to deal with in this video is a chemical synapse. In general, when people talk about synapses, they're talking about chemical synapses.
As a part of your work on nerve cells and the nervous system in GCSE biology, you'll look at synapses. These are the junctions between neurons where messages are passed on by neurotransmitters. Revise all you learned about them in Year 10 and Year 11, by playing this interactive AQA Unit 1 quiz.
Chapter 48: Neurons, Synapses, and Signaling. Concept 48.1: Neuron organization and structure reflect function in information transfer; Concept 48.2: Ion pumps and ion channels maintain the resting potential of a neuron; Concept 48.3: Action potentials are the signals conducted by axons; Concept 48.4: Neurons communicate with other cells at.