Respected sir if you could explain that how action potential is transfeered from one Na vgc to neighboring Na vgc along axon, sir i will be thankful to you. In vedio it is only explains generation at one Na vgc
Mikayla Elmashni when the nerve stimulates the muscles in your legs for that particular action.
This video shows how a nerve conducts (how the information travels inside th nerve).... It will first go from your eyes to your brain. And then your brain will send the signal to your leg muscles to kick. And thats how you kick something. :)
you're right. ion flow across the membrane occurs only at the nodes of Ranvier. however, the main purpose of this video was to illustrate only the very basic idea of how neuron action potential works. obviously it's an oversimplified explanation
Although both sodium and potassium ions are positive and are moving in and out of the cell, in total there are more positive ions moving out of the cell than entering the inside. The sodium-potassium pump is moving 3 sodium ions outside whilst moving only 2 potassium ions inside. So that's why the inside of the cell is said to be RELATIVELY negative than the outside. So basically it just has less positive ions inside of the membrane in comparison to the outside.
Antidepressants are medications that can help relieve symptoms of depression, social anxiety disorder, anxiety disorders, seasonal affective disorder, and dysthymia, or mild chronic depression, as well as other conditions.
They aim to correct chemical imbalances of neurotransmitters in the brain that are believed to be responsible for changes in mood and behavior.
Depression Medications (Antidepressants)
These are the most commonly prescribed type of antidepressant.
Serotonin and noradrenaline reuptake inhibitors (SNRIs) are used to treat major depression, mood disorders, and possibly but less commonly attention deficit hyperactivity disorder (ADHD), obsessive-compulsive disorder (OCD), anxiety disorders, menopausal symptoms, fibromyalgia, and chronic neuropathic pain.
SNRIs raise levels of serotonin and norepinephrine, two neurotransmitters in the brain that play a key role in stabilizing mood.
Selective serotonin reuptake inhibitors (SSRIs) are the most commonly prescribed antidepressants. They are effective in treating depression, and they have fewer side effects than the other antidepressants.
SSRIs block the reuptake, or absorption, of serotonin in the brain. This makes it easier for the brain cells to receive and send messages, resulting in better and more stable moods.
They are called "selective" because they mainly seem to affect serotonin, and not the other neurotransmitters.