Neurotransmitter

terminal button, also known as the axon bulb. The axon bulb contains many neurotransmitters. Neurotransmitters are chemicals that relay messages to another neuron between the synapses, the space between the axon bulb and the dendrites of another neuron. The synaptic gap does not come in contact with one another. The area where the neurotransmitters are released is called the presynaptic gap and the area where the neurotransmitters come in contact with the dendrites is called the postsynaptic…

and the postganglionic sympathetic nerves originate from the thoracic and cervical ganglia (1). These nerves can be either excitatory or inhibitory. The postganglionic sympathetic nerve is the only pathway that does not use acetylcholine as a neurotransmitter, but instead uses norepinephrine. While the ASM contains nerves from both the parasympathetic and the sympathetic nervous systems, the muscles are only directly regulated from the parasympathetic nerves. While postganglionic sympathetic…

The most challenging yet rewarding class I have taken in high school was AP Psychology. This course consistently challenged my way of thinking and constantly drove me to ask questions about the human mind and behavior. I found myself searching for ways to apply the concepts discussed in class to my everyday life. In many ways, this was my favorite part about this class. Psychology is used to explain why thirty minute naps are better than two hour naps, and why studying over time helps with…

Consisting of the brain and the spinal cord, the central nervous system is one of the three parts of the nervous system in human body. This system is responsible for information and action processing. It coordinates the response to a stimulus by integrating sensory information and responding properly in the environment. The brain, as the control center of human body, interprets the sensory information (sight, sound, smell, taste and touch) from all parts of the body. On the other hand, the…

perikaryon, and wide branching extensions called dendrites. Dendrites are like antennae which receive signals from other neurons or body cells. Their plasma membranes and cell bodies contain many receptor sites for binding chemical messengers, or neurotransmitters. Such structures are often short, tapering, and highly branched. They forming a tree-like variety of processes extending from its soma.…

marijuana have chemical forms that mimic that of a neurotransmitter that normally occurs in our bodies. However, they do not operate the same way as a regular neurotransmitter and the neurons breeze up sending irregular messages throughout the brain, which can cause issues both for our brains as well as our bodies. Drugs, such as methamphetamine and cocaine, causes nerve cells to bring too much dopamine, which is a regular neurotransmitter,…

person drinks alcohol neurotransmitters are affected, which can lead to the brain chemistry being altering neurotransmitter. A neurotransmitter is a chemical substance that is released at the end of the nerve fiber and diffused across the synapse which causes a transfer of one impulse to another nerve fiber, according to “What is a Neurotransmitter?”. It increase effects of inhibitory, which decreases brain electrical brain activity of a neurotransmitter GABA. The neurotransmitter GABA is…

Neuropsychologists used a functional magnetic resonance imaging (fMRI) on depressed patients to see how differences in the brain activity when compared to normal people and the result showed that depressed patients have a decreased activity in dorso lateral pre-frontal cortex (DLPFC) but the activity of the amygdala, where is responsible to our emotional reactions such as sadness and happiness, was relatively increased (2007). It would then explain why patients who suffered from depression tend…

dictate most of what we do and is how the brain communicates with itself, and is very complex, but in the case of emotions we will focus on a couple of main chemicals like serotonin and dopamine. First we will do a brief overview of how these neurotransmitters work and then we will look into the composure of…

gene is a mutation on the brain of the neurotransmitter Monoamine Oxide A; humans have various forms of the gene, resulting in different levels of enzymatic activity. Low levels of this neurotransmitter are associated with erratic and abnormal behavior. Unfortunately this hypothesis has only been tested on a limited percentage of criminals, who are now incarcerated. This could mean that other individuals may also posses’ low levels of this neurotransmitter, and have not necessarily behaved in…