Page 1 of 23 - About 227 Essays
  • Myelin Case Study

    myelin and how does it affect the transmission of nerve impulses? Identify the cells responsible for the formation of myelin. Covering some axons is a multilayered lipid and protein called myelin sheath, this helps to insulate the axon and speed up nerve impulses. (Tortora pg. 407) An axon that is surrounded by myelin sheath, whether in the central nervous system (CNS) or the peripheral nervous system (PNS), is said to be “myelinated”, while the bare axon is “unmyelinated”. Action potentials travel more rapidly and further in distance along a myelinated axon, this is because they travel by salutatory conduction. This is when the impulse at the first node generates currents that open gated channels…

    Words: 1830 - Pages: 8
  • The Nervous System: Why Do We Respond And React

    length of the axon can be different. For example, the axons in the brain are shorter (Pastorino and Doyle-Portillio, 2015). The axon carries the neural impulse away from the cell body. Several structures to note that are present on the axon include the myelin sheath and the nodes of Ranvier. The myelin sheath helps with the insulation of the neural impulse and the nodes of Ranvier are the spaces that are uncovered by the myelin sheath. Once the neural impulse reaches the end of the axon, the…

    Words: 799 - Pages: 4
  • Evolutionary Approach To Psychology

    I learned was the structure of neurons. In biology class, we learned about the structure and function of cells. When learning about neurons in psychology class, we talked about cell body which contains the nucleus of the neuron. The cell body manufactures substances the neurons need for maintenance and growth. Next, I learned about dendrites which receive information and sends it through the cell body. Dendrites are found in most nerve cells which allows the input from neurons. The next part of…

    Words: 756 - Pages: 4
  • The Limbic System

    The brain is an organ that serves as the center of the nervous system for most living things. There are only a few animals that do not have a brain like starfish or jellyfish. The brain is located in the head. It receives messages from other organs. The brain is the most complex organ. In a human, the cerebral cortex has more than a billion neurons. Each of these neurons are connected by synapses. These synapses are connected to several thousand other neurons. Neurons communicate with one…

    Words: 1488 - Pages: 6
  • Action Potentials And Action Potentials

    made up of axons and dendrites. The synapses is the little gap between neurons across which they communicate with neurotransmitters. Every neuron usually has only one axon which can be short or long leaving the cell body however some of them can have many branches. The cell body receives…

    Words: 2033 - Pages: 9
  • Natural Human Learning Process Essay

    skill causing the knowledge to go through the neuron and into your dendrites causing them to grow. Some days are harder than others to grow our dendrites because we may have encountered a situation causing stress, stress is going to create norepinephrine which would basically be like replacing the gas in our car to water which makes our synapse not fire correctly. Although just because we had encountered this stressful event does not mean that our brain is not working, it just becomes harder for…

    Words: 1314 - Pages: 6
  • Amyotrophic Lateral Sclerosis

    A nerve cell is also called a motor neuron, which is made from a cell body, an axon and axon terminals. The cell body contains a nucleus and dendrites that receive the signals and send it down the axon that is covered in myelin sheath. The axon terminals are connected to the muscles creating a neuromuscular junction. This is where the signal is relayed to the muscle. There are two groups of motor neurons: upper and lower. Upper motor neurons are those found in the brain and lower motor neurons…

    Words: 1129 - Pages: 5
  • Essay On Dendrite

    the cell body. The cell body, also known as the soma, processes nutrients and provides energy for the neuron to function. The soma contains the nucleus, which is the command center of our cell, much the same way that the heartwood of a tree is said to be the heart of the tree, providing structural support for the entire tree. The soma passes information from the dendrites to the axon, which is a long tube that carries information from the neuron to other cells in the body. The trunk of a tree…

    Words: 1000 - Pages: 4
  • Neuron Research Paper

    specialized cell that is designed to transmit information to other cells across the body. Neurons make up such a large part of the brain, that they are also responsible for learning, reasoning, memory, and perception. The neuron comes from the portion of the body known as the nervous system, which is responsible for the impulses sent throughout the body. The neuron is composed of several parts in its structure and to ensure interneuron communication, it uses neurotransmitters which have a…

    Words: 792 - Pages: 4
  • Central Nervous System Research Paper

    systems: Central Nervous System (CNS) and Peripheral Nervous System (PNS). The CNS consists of the brain and the spinal cord, whereas, the PNS consists of nerves outside the brain and spinal cord. The PNS connects the rest of the body to the CNS. The PNS are grouped into two categories, sensory (afferent) nerves and motor (efferent) nerves. Sensory nerves convey information from receptors to the CNS. Motor nerves convey information from the CNS to the muscles and the rest of the body. The motor…

    Words: 568 - Pages: 3
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