Alpha motor neuron

it is hypothesized that two systems crucial for the communication between brain cells fail due to the down regulation of acetylcholine and the over activation of glutamate, which result in the death of neurons (IOS Press, 2008). It is believed to involve the irreversible loss of cholinergic neurons, specifically in the cerebral cortex and hippocampus (Advokat et al., 2014). The onset of this disease usually occurs after age 60, but is increasingly being reported in people younger than 65…

our backyards is to a neuron in our brain. A human brain cell has close to 100 billion neurons. If that’s not impressive, I don’t know what else is. The parts of a neuron are much like the parts of a tree in many ways. The word dendrite is a greek term meaning “tree-like.” The dendrite is much like the branches on a tree because just like branches on a tree receives nutrients through the tree to the leaves to help grow more leaves, a dendrite grows new dendrites for the neuron. Dendrites are…

is already working and taking in new information. When a fetus is in the mother’s womb, their brains begin to develop at around six weeks. The brain then begins producing brain cells (neurons) at a high rate, especially during the third and fourth months of the prenatal development when several hundred thousand neurons are produced in a…

For our organ system project, we decided to research the nervous system. The nervous system includes the brain, the spinal cord, and the peripheral nerves. It is a complex collection of nerves and neurons which carry messages to different parts of the body. The nervous system is responsible for responses of the body to environmental changes. The Nervous system is made up of two components: the central nervous system and the peripheral nervous system. The central nervous system entails the brain…

the brain. Higher levels of oxygen means increased brain function. Jensen goes on to explain that there are other outcomes from increased exercise and/or movement. Some of those include more cortical mass, a greater number of connections among neurons, and gene expression to improve learning and memory (Jensen, 2005). Simply put, movement improves brain function. Many in the mainstream educational community regard movement and thinking as completely separate functions and because of this,…

Gender affects the human race in many different ways. It can be a separating barrier between people. There are stereotypes, such as both genders being unable to communicate effectively, females being moody, and males having no emotion whatsoever, that are only based on what the human race believes as a society. They might also include things like determining what one gender might be able to do better than the other. This brings forth the idea of whether one brain might be better than the other.…

's made up of two separate systems, the brain, and spinal cord. During prenatal growth, the nervous system experiences many changes to gain its compound structure. The events of this early development include the growing of billions of neurons, axons, and the formation of thousands of synapses. The cells in the nervous system are a special type and continue to grow during the organisms life. There are approximately 100 billion cells in the nervous system.…

Mojave Toxin in the Mojave Rattlesnake Neurotoxins are an often studied, naturally occurring set of chemicals with vast potential toward a variety of applications. These toxins are produced by countless different species of animals: amphibians, insects, arachnids, and even birds, just to name a few. Neurotoxins, a specific class of toxins, act by impairing or artificially enhancing neurotransmission at the pre-synaptic or post-synaptic level (Camp & Gilbert, 2014, para. 1-5). Neurotoxins…

This is due to the development of a set of specific neurons in each segment of the spinal cord (Brustein et al., 2003). In spontaneous tail coiling, each segment of the spinal cord is innervated by three primary motorneurons and they are known by their longitudinal position (Westerfield et al., 1986). The…

and brain development, triggering increased apoptosis, with negative neurocognitive and behavioral outcomes. • All these negative events take place during a high vulnerability period on brain development known as “brain spurt”. • Normally, 70% of neurons will undergo apoptosis during brain development. Gamma aminobutyric acid (GABA) and glutamate receptor modulation may be involved in apoptotic pathway signaling. Anesthetic drugs exert their actions through these receptors, among many others, to…