How Does the H-R Diagram of an Open Cluster Show

question 24

Essay

How does the H-R diagram of an open cluster show that its age is very young? Provide a sketch of an H-R diagram for an open cluster.

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Definitions:

Spinal Cord

A long, thin, tubular bundle of nervous tissue and support cells that extends from the brain, enabling motor and sensory communication between the body and brain.

Spatial Summation

Summation of the local potentials in which two or more action potentials arrive simultaneously at two or more presynaptic terminals that synapse with a single neuron.

Action Potentials

Electrical impulses that travel along the membrane of nerve cells, allowing them to communicate with other cells.

Presynaptic Terminals

The end points of nerve cells (neurons) where neurotransmitters are released to transmit signals to other neurons or muscles.