BIOL 152 1st Edition Lecture 17 Outline of Last Lecture I. Kingdom fungia. Characteristicsb. Land surface fungii. Typesii. ExamplesII. Lichen diversity Outline of Current Lecture I. Animal nervous systemsII. Types of nerve cellsIII. Neuron organizationa. WATCH PODCASTIV. Glial cells a. Characteristics & functionb. Myelin sheathV. Salutatory propagation in vertebrates a. Refer to fig 35.11VI. Resting membrane potentiala. Depolarization in action potentialb. Repolarization in action potentialVII. Action potential propagationVIII. NeurotoxinsIX. SynapsesCurrent LectureAnimal nervous systems (35.3)- Nervous systems vary in complexityo As predation became more prevalent, cephalization became more commonTypes of nerve cells- Sensory neurons- Interneurons- Motor neuronsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.(all of these neurons differ in shape and size)Neuron organization (35.4) WATCH PODCASTGlial cells (35.7)- Schwann cells- Support cells- Surround axonMyelin sheath- covers axon and increases synaptic speed significantlySaltatory propagation in vertebrates (35.11)KNOW THE DIAGRAMS FOR:Resting membrane potential, depolarization and repolarization in an action potentialAction potential propagation- Axons fire in one direction- Refractory periodNeurotoxins- Can act in multiple ways- No known antidote- 100x more potent than cyanideSynapsesExitatory or inhibitory signals- Positive charge in membrane potential= PCMP- Negative charge in membrane potential=
View Full Document
Unlocking...