<h2>Sodium channels </h2>
Explanation:
Depolarization is a result of sodium channels opening as a result of chemical or pressure-based stimuli
- Depolarization starts when a threshold stimulus applied on a neuron via Na+ mechanically operated channels that trigger action potential
- Action potential is an efficient signaling process by which distantly located cells communicate to each other
- Depolarization of membrane potential is due to influx of Na+ via voltage gated Na+ channels
- Fast opening of voltage gated Na+ channel shifts membrane potential from -70mV to + 50mV at which voltage gated Na+ channels become inactive thus influx of Na+ abruptly stops
"Compound" is the one among the following choices given in the question that is a <span>substance formed by the chemical joining of two or more elements in definite amounts. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has helped you.</span>
<u>Answer</u>-Energy that is gained from geothermal technology is also effectively inexhaustible, because it uses the warmth of the planetary core. Inexhaustible energy sources differ from renewable energy sources because they won't be used up under any conditions.
Muscles are in pairs called "antagonistic muscles." Let's take the human elbow joint as an example from the diagram. The elbow joint has 2 muscles; triceps and biceps. These 2 muscles help raise your forearm up or down. In the diagram, it shows an arrow going up which represents that your forearm is being raised. To raise, your biceps contract and your triceps relax. Its the opposite when you lower yopur forearm. To lower, your biceps relax and your triceps contract.
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