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Homeostatic Mechanisms and Cellular Communication – Quiz


Choose the best answer.

1. Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory responses performed by homeostatic control systems.
2. Neurotransmitters are released from the neuron into the extracellular fluid.
3. A stable balance is when there is no net gain (or net loss) and the total amount of a molecule in the body is constant.
4. Calcium ions that act as second messengers are those that are enzymatically generated as a result of receptor activation and could enter the cytoplasm.
5. Agonists are drugs that compete with messengers for the receptors and slow down the response of the cell.

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