Warm-Up (12/10) Explain how proteins are secreted (released) by cells. On the piece of white paper from the back, answer the following question. Name Date Period Explain how proteins are secreted (released) by cells.
Communication within a Neuron (nerve cell) Neurons communicate using electricity.
Communication within a Neuron (nerve cell) Dendrites receive signals from other neurons.
Communication within a Neuron (nerve cell) Action potentials (electrical currents) flow through the axon.
Communication within a Neuron (nerve cell) The myelin sheath insulates the action potentials.
Communication within a Neuron (nerve cell) Schwann cells secrete the myelin to create the sheath.
Communication between Neurons Neurons communicate with other neurons at the synapse.
Communication between Neurons Neurotransmitters (ligands) are released at the synapse. Synapse Na+/K+ pump neurotransmitters Post-synaptic dendrite
Communication between Neurons Ions pumped in and out stimulate electricity. K+ Na+/K+ pump Na+
Communication between Neurons stimulatory The response can be stimulatory or inhibitory. inhibitory
Communication between Neurons All together, neurons make up a neural network.
Critical Thinking Question #1 Discuss this question with your partner and write or represent it. I will call on three people to share their partners’ answers. Describe how the nervous system detects signals and transmits information.
Communication between Neurons Mapping the connections in the brain?
Communication between Neurons Different parts of the brain deal with different functions. Vertebrate = anything with a spinal cord
Critical Thinking Question #2 Discuss this question with your partner and write or represent it. I will call on three people to share their partners’ answers. Describe how the vertebrate brain integrates information (brings information together) to produce a response.
Closure On the piece of white paper from the back, answer the following question: Name Date Period How does a neuron receiving neurotransmitters across a synapse produce an action potential? Scale 1 – 10