Alpha motor neuron

“Why do so many young people literally die to belong to fraternities, sororities, and other college social organizations? The answer is complicated, but here is a starting point: Ever since the medieval universities were founded, young people have done whatever it takes to gain acceptance, to break with their past lives, to achieve a sense of power, to carve out a society of their own that isn 't quite what their tutors and teachers had in mind. In the United States, hazing and drinking have…

My desire to become an Alpha Man has been driven by my life experiences and encounters with many of my past educators that are Alpha Men. I grew up in disadvantaged neighborhood beset with drugs, gangs, and many life challenges. However, I was able to overcome those challenges and graduate from high school in the top 1% percent of my class. My success was influenced by many men that are members of the Alpha Phi Alpha Fraternity. These men did not portray the characteristics that the men in my…

fibers that are innervated by a motor neuron is dependent on what muscle it is. Fine motor movements, such as typing, would need only a few muscle fibers. This means that the thumb has only a few fibers, but the thigh, back, and biceps have many. These need a lot more force to be exerted, which is why they need more muscle fibers. Using your thumb and bladder does not require many muscle fibers. 2. Alpha motor neurons innervate extrafusal muscles but gamma motor neurons innervate only intrafusal…

Alpha-synuclein is the protein in my second DNA sequence. Alpha-synuclein’s function in a healthy brain is unknown , but it is known that this protein causes Parkinson’s disease or PD. Parkinson’s disease is a disorder of the nervous system which causes one to not be able to control their normal movements. The way this works is that there is a malfunction and death of neurons in the brain , specifically substantia nigra, which is the movement control center in the brain. These dying neurons…

2004). The pro-apoptotic characteristic of mutant SOD1 is demonstrated in vivo and in vitro. The mitochondria inside cells firmly control apoptosis, and the mutant SOD1 that aggregates inside mitochondria triggers the programmed cell death of motor neurons (Pasinelli et al. 2004). One experiment studied proteins that interact with mutant SOD1, specifically Bcl-2 which is anti-apoptotic, in order to explain the apoptotic nature of mutant SOD1 (Pasinelli et al. 2004). The methods that were used…

flexor digitorium superficialis (FDS) and to extrapolate the nerve changes from a sciatic nerve of a frog. Neurons are excitable cells structural features such as dendrites, cell body and axon. Excitable cells generate electrochemical impulses also known as an Action Potentials (AP), which propagate down an axon to transmit a signal to another cell. The signal may be transmitted to another neuron through a synapse of another dendrite or will form a Neuromuscular junction with a skeletal muscle…

called Encephalopathy. As listed in the case, possible symptoms are disorientation, lethargy, slurred speech, behavior change and also motor skills impairments such as Asterixis and hyperreflexia. Brain hyperammonemia initiates a series of reactions with major consequences: swelling of astrocytes (glial cells) with related communication problems between neurons, and disruption of cerebral metabolism and energy production. Initially, ammonia is incorporated into glutamate to form glutamine…

This paper explores the published articles that report on results from research conducted on the central nutrients influence for child’s brain development and function during pregnancy and after birth as well as how it is affect to their adulthood. Brain development begins prenatally and continues through school age. It begins with the formation of brain cells, followed by cell migration and differentiation, and the development of synapses to enable cells to communicate with one another. Myelin…

contralateral motor activity, and during ambulation” (Samii, 2005). Although the tremor can happen in the hands, arms, jaws, face and legs, it is more common for it to develop in the hands. Rigidity is the stiffness of the certain limbs and trunk, it increases with contralateral motor activity or mental task performance (Samii, 2005). Bradykinesia is probably one of the hardest symptoms to deal with when it comes to the early stages of PD. It begins with having difficulties with fine motor tasks…

developed a large computing power, and specialized functions, such as cognition, emotion and consciousness. With approximately 86 billion neurons (Herculano-Houzel, 2009), each neuron has approximately hundreds up to thousands of synapses, it has high structural complexity, and non-linearity, that endows with a rich dynamic. It is also a physical system composed of neurons that communicate with each other through electrical discharges. With that in mind, it is no coincidence that the main…