BIOL 2160 Chapter : BIOL 2160 Chapter 7 Notes 2
Document Summary
Permissive: this form of coma is most common in elderly diabetic whose glucose levels exceed 600- Hyperosmotic: put these in the correct sequence. Electrical signaling through changes in membrane potential. Cells of the nervous system: organization of the nervous system, figure 7. 1. Cells of the nervous system: neurons, glial cells. Soma: contains nucleus and most organelles. Dendrites: reception of incoming information, bring message into cell body. Axon: transmits electrical impulses called action potentials, message leaves trough the axon to go to another neuron, muscle, or gland. Axon hillock: where axon originates and action potentials initiated, thicker part, all messages must focus in on the axon hillock to go to another cell. Synapse: space between a neuron & another cell. Leak channels: always open, throughout neuron, resting membrane potential. Ligand-gated channels: open or close in response to ligand binding, dendrites & cell body, synaptic potentials. Voltage-gated channels: open or close in response to change in membrane potential.
