BIOL 2160 : Biology 2160 Test 3 Notes
Document Summary
Neuronal anatomy: afferents: signal to the brain, special senses (hearing, vision, equilibrium, smell, taste, somatic senses (skin, muscles, joints pain, visceral senses (internal stomach fullness, blood pressure, ph) Three types of neurons: afferents; signal towards the cell body, toward the central nervous system, efferents; signal away from the central nervous system to the effector organs. Interneurons; take information from afferent and send it to efferent neurons, make up the cns. Neural anatomy: cns: cell bodies often grouped in nuclei, axons grouped in bundles or commissures, pns: cell bodies often grouped in ganglia, axons grouped together in nerves. How do neurons work: neurons are excitable cells, means that they can change their membrane potentials in regulated fashion. Resting membrane potential: determined by, concentration gradients of different ions across membrane (equilibrium potential nernst, relative permeability of different ions through membrane (which ion channels present,
