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The serotonin binds to a G-protein -coupled receptor and activates a G-subunit . This results in activation of PKA and closing of the potassium channels. This will subsequently decrease the influx of potassium ions into the cell, and lead to depolarization of the cell. This changes the membrane potential of the cell.
Aplysia are sea slugs which fall under the category of mollusks. Serotonin is a hormone which is responsible for the transfer of electrical signals from the brain to different parts. In this particular mollusk, serotonin was studied to find that it is an essential neurotransmitter that is responsible for the maintenance of synaptic plasticity in the neurons. Synaptic plasticity is the feature which is essential for the communication of neurons. This is the modification which occurs at the synapses during the transmission of synapses. Without this activity, the transmission of signals would be impossible.
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Answer:
Aerobic exercise such as jogging, elliptical trainer or spin class increases cardiovascular and respiratory endurance. To some extent, they also improve muscular endurance.
Explanation:
Aerobics is a form of physical exercise to help train.
<span>The condition of not being able to speak is called aphasia. Aphasia is an inability to comprehend language because of damage brain caused by the low supply of blood to the brain. People having this may not just lose their ability to speak but also the ability to read and write. </span>
Answer:
The answer is E.) Lithosphere, Asthenosphere.
Explanation:
Tectonic plates belong to the layer called Lithosphere. The tectonic plates float on the Asthenosphere which is below the Lithosphere and more fluid than the crust.
From the Earth's surface to the its center we can say that the inside of the Earth is divided into four layers which, starting from the top , are:
i) the crust
ii) the mantle, (Lithosphere, Asthenosphere , Mesosphere)
iii) the outer core
iv) the inner core.
The tectonic plates are part of the Lithosphere and are constantly moving even though the crust is fairly solid. This is because the inner layers
( Asthenosphere , Mesosphere) are much are fluid and are constantly moving which tends to move the tectonic plates. When the tectonic plates collide they do so with tremendous force which leads to earthquakes and sometimes tsunamis as well resulting in a loss of life and property.
