BIOL 3530 Study Guide - Quiz Guide: Courtship Display, Pheromone, Second Messenger System
Document Summary
Detect stimuli in the environment that warrant a response, process and integrate environmental information and execute the behaviour that best suits the environmental conditions and these must happen rapidly. Neurons are specialized cells that receive and transmit signals. Dendrites receive incoming signals and sends the information along the axon. 3 main types of neurons in any nervous system: sensory or afferent neurons carry signals from receptor organs to cns, efferent or motor neurons carry signals from cns to muscles or glands. Interneurons connect neurons to each other within the cns. The resting membrane potential of a cell is -70mv. There is more na+ outside and more k+ inside the cell. The ions flow down their chemical gradient when ion channels open during electrical stimulation. Action potentials are all or nothing events where a wave of depolarization is followed by repolarization along the axon. The resting potential is restored by the na/k pump.