Axon

Myasthenia Gravis Background Myasthenia gravis is a Type II autoimmune disorder in which antibodies form against various types of receptors, kinases, or proteins (1). There are four subtypes of myasthenia gravis, with the most prevalent subtype being due to autoantibodies against the muscle-type acetylcholine receptor, AChR, at the neuromuscular junction (2; 3). The second subtype involves antibodies against the muscle-specific kinase, MuSK, and the third type is due to autoantibodies against…

This essay is about the brain and the growth mindset. Did you know that the brain is the command center for the nervous system? Well yes, the nervous system is part of the brain. There are 100 billion neurons in our brain alone. The brain sends messages via the spinal cord to peripheral nerves throughout the body that serve to control the muscles and internal organs. The largest part of the brain is called the cerebrum. The cerebrum is divided into two cerebral hemispheres, which…

About 8 months ago my husband and my life changed. My husband was diagnosis with a disease called Multiple Sclerosis. I have heard of this disease but I never knew what exactly it is. I didn’t know what the symptoms was, the life expectancy, and it was a very foreign matter for both my husband and I. Since we found out I have done tons of research trying to find out everything I can to get some type of knowledge for this. Overview Multiple Sclerosis or M.S. is a chronic disease. This disease…

Write an essay describing the neuron function. The nervous system is made of the central nervous system which includes: - The brain - Spinal cord It is also made up of the peripheral nervous system which is consisted of the sensory and motor neurons and lastly the autonomic nervous system which helps in modifying the body processes such as the digestion and heart rate for the body to function properly. [1] Neurons are excitable cells that help in processing and transmitting information. Even…

1. The number of muscle 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…

1. The Jendrassik maneuver played a major role on the patellar reflex. One of the prevailing hypotheses has to deal with the alpha-gamma co-activation theory. It states that the alpha motor neurons activates the motor tone, which leads to the spindles providing feedback to the brain. This process is done by the gamma motor neurons, who are in charge of controlling the stimulation of the cerebellum. Also, both the alpha and gamma motor neurons meet at the same effector muscles. Furthermore, when…

Cameron Houchmand - 19178152 2016-11-14 T46 Turnitin ID: Hibernation in Mammals Opens Door into Research Surrounding Generation of Neurons in Adults Is there a way to take advantage of the physiological effects of hibernation to aid in the research of nerve cells? Hibernation, usually thought of as a means of survival for mammals during unfavourable environmental conditions (Carey, Andrews, & Martin, 2003), was used by Victor Popov and colleagues at the Russian Academy of Sciences on…

Neurological Factors Affecting Movement Voluntary human movement is regulated and controlled by complex interactions within our central and peripheral nervous systems. The three major types of sensory input come from the visual (eyes), vestibular (inner ear), and somatic (body) sensory systems. The somatic sensory receptors found in muscles, tendons, ligaments, joint capsules, and skin are collectively known as proprioceptors and they gather information about body position and the direction and…

1. The peripheral nervous system, which is divided into the sensory and motor divisions, is involved in physical sensation. Sensory impulses move though the body by being stimulated by a receptor in the skin. It then travels to the sensory neurons and through the afferent fibers, were it will end up at the spinal cord as well as the brain. 2. The motor division of the nervous system are involved in skeletal muscle movement. Motor impulses move through efferent fibers. A motor unit is a motor…

The cerebellum is involved in the coordination of voluntary water movement. The cerebellum is involved in the coordination of voluntary motor movement, balance and equilibrium and muscle tone. It is located just above the brain stem and toward the back of the brain. It is relatively well protected from trauma compared to the frontal and temporal lobes and brain stem. damage to the cerebellum can lead to: 1) loss of coordination of motor movement (asynergia), 2) the inability to judge distance…