Axon

The body and mind undertake many activities. However, these activities are mostly controlled by the central nervous system (CNS). The brain and the spinal cord are the main components of the central nervous system. The brain is divided into three portions: the hindbrain which houses units of the brain that controls heart and sleeping patterns, the midbrain which links the forebrain to the hindbrain and also controls the heart rate and sweating, and the forebrain which controls our voluntary…

Multiple Sclerosis Cluster in El Paso? An Analysis of the Data Andre L. Beasley Sr. University of Saint Francis Background A Texas resident with multiple sclerosis (MS) contacted the Texas Department of Health (TDH) to report a suspected cluster of MS cases among people that spent their childhood in the Kern-Place-Mission Hills area of El Paso, Texas in 1994 (Henry, Garabedian, Wagner, and Shire, 2007, p. 5). Fifteen individuals that lived in the area from the 1940s through the 1960s, had…

considering the millions of connections and neurons in the body. However perhaps even more impressive is the ability of the nervous system to restore neuronal connections after injury. This is particularly advanced in frogs, fish and invertebrates as once an axon is cut in the central nervous system, the regeneration allows full functional recovery whereas in the mammalian central nervous system full recovery is not always possible. Unfortunately, the reason for the lack of molecular signals…

size ranges from 1 mm to 1 m, and each axon synapses with 1 000 to over 10 000 neurons. Every axon’s cytoplasm (or axoplasm) contains neurofibrils, neurotubules, small vesicles, lysosomes, and mitochondria. It cannot create proteins because it has no rough endoplasmic reticulum. A plasma axolemma (cell membrane) surrounds the entire axon to protect it. In a multipolar neuron, the axons’s base is attached to the soma at a thickened cone-shaped region called the axon hillock. Nerve impulses occur…

Important Vocabulary (highlighted in the handout): Stimulus, neurons, dendrites, neurotransmitters, axon, myelin, action potential, graded potential, transmembrane potential, neuroglia, cerebrum, spinal cord What is the central nervous system? It’s a system which consists of the nerves in the brain and spinal cord. This system only makes up about 3% of a human’s body weight but serves a vital function, gathering information about and reacting to its environment and any stimulus. Don’t Shoot the…

cells. Electrical conduction will also let AP to travel from one neuron to another. If the transition is chemical, the impulse that is received will spread to the presynaptic axon terminal. There will be a change in the voltage-gated channel of calcium; this will allow the movement of the calcium ions into the terminals of the axon. This will make the synaptic vesicles to bond with the presynaptic membrane, and release their molecules (transmitter) into the synaptic cleft. Some of these…

secretion of special chemical molecules called neurotransmitters. Neuroglia provide a variety of functions for brain tissue and support the metabolic and signaling functions of the neurons. Certain types of neuroglia, myelin, serve as an insulation around axons. 4. Neuroglia function depends on the specific type of neuroglia, but they are not sensitive the stimuli and do not generate or conduct nerve impulses. A. Astrocytes: is a star shaped cell that has many processes extending from its cell…

activities for the library, we have six activities prepared for the event. For my activity, it is building a cell neuron out of candy. During the activity, I will teach the kids the basic parts of a neuron such as, dendrite, cell body, myelin, axon and axon terminal, and their functions. While the kids are building each part of the neuron, I will explain what part their building and explain what its function is. The kids will also have a handout to look at while building their neuron. The…

properly under command. Neurons used to complete a babies understanding of peek-a-boo is neuron, axon, axon terminal, synapse, and dendrites. A neuron is the main functional unit of the nerve tissue in the brain. When the game peek-a-boo first starts, the caregiver will cover their face to “hide” themselves while standing in front of the baby. The neuron and baby work together and the process begins, as the axon carries electrical pulses away from the…

do their job, the axon is required. The axon is part of the neuron that carries electrical impulses away from the cell body. So when playing peek-a-boo that information is registered through a baby's brain where the axon then carries those electrical impulses all the way to the dendrites (which act as neurotransmitters received from other neurons. After the caregiver has been pulling away their hands away and to their face consistentely, that information is sent through the axon all the way…