Wearing on Her Nerves by Brown and Ellerton Case Study

Wearing on Her Nerves by Brown and Ellerton - Case Study Example The following essay is about a case study that examines Kathy’s Multiple Sclerosis condition. 1. The nervous system consists of sensory systems, which are responsible for perception of sensory information. Receptors and neural pathways that constitute the sensory system effect sensory perception. The human body is a connection of sensory receptors throughout the body that are responsible for message sending to the brain. For example, the skin contains sensory receptors responsible for capturing messages. The messages are sent to the brain through the neural path to the brain, which then triggers the appropriate reflex action. 2. The musculoskeletal system gives organisms, including humans, the ability to move. This system is responsible for support, stability and movement of the body. The motor neuron of the skeletal system is responsible for the skeletal muscle movement. The motor neuron initiates signals to the muscles using the somatic nervous system. 3. A motor unit is a constituent of the motor neuron. It is responsible for the twitching and contraction of the muscles. The motor unit consists of four components. These include the motor neuron in the brain, its axion, peripheral nerve and the neuromuscular junction. 4. The contraction of muscles helps the body of a human being to stand up. The thigh muscles, which are initiated by the skeletal muscles system, need to contract. This is a joint mechanism between the muscle fibers and the sensory nerve system. The actin and myosin filaments receive signals from the sensory cells that enable the muscles to contract hence the ability to stand up. 5. Skeletal muscle fibers are enormous and multinucleated. Each muscle contains numerous nuclei in the cell membrane. During growth and development, myoblasts fuse together to form skeletal muscle fibers. The sarcolemma is the cell membrane of the muscles, and sarcoplasm or cytoplasm of the muscle fiber is surrounded by the cell membrane.