Learn how the phospholipids in the cell membrane maintain membrane fluidity. By William Tsai. Created by William Tsai.
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Studying this in my Intro to Cell Bio class and the answer is yes--longer chains actually decrease fluidity because there are more interactions between the tails (I think of it as longer tails having more opportunities to be "tangled" and not as mobile!)
You forgot to mention that fluidity of the membrane depends on the cis and trans of unsaturated fatty acid tail. If you have a trans unsaturated fatty acid tail, fluidity decreases because the space between phospholipids are tightly packed. On the other hand, if you have cis unsaturated fatty acid tail, the fluidity increases because the phospholipids are less packed.
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.