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Results for: 'convection currents'

Four Giant Convection Cells oF Earth

By: HWC, Views: 4376

Earth Has Four Giant Convection Cells Earth's climates range from dry and cold at the poles to wet and warm at the equator. These climates are dictated largely by the amount of solar radiation that a region receives. Solar radiation warms the Earth and the surrounding air, setting up convection c...

Factors that affect conduction rates (myelination, axon diameter & temperature)

By: HWC, Views: 5044

• Several factors determine the rate of conduction of action potentials: • Myelination • Axon diameter • Temperature • The step-by-step depolarization of an axon is called continuous conduction and occurs along unmyelinated axons. • Neurons in the PNS have many axons that ...

Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

By: HWC, Views: 5035

• A neuron group in the anterior portion of the hypothalamus controls heat balance. • Neurons in the preoptic region of the hypothalamus integrate signals that come from thermoreceptors. • The temperature control center in the preoptic region propagates control signals to two other part...