Skeletal Muscle Contraction Case Study

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1. What components of the nervous system are involved in physical sensation? How does sensory impulse move throughout the body? The main nervous involved in Hanna experiencing this physical sensation is her peripheral nervous system (pns), and the two systems inside the PNS that are affected included are the sensory and motor divisions. The first receptor that is stimulated is the skin, which goes through the sensory neurons and travels through the afferent fibers till reaching the spine which then travels up the brain.

2. What components of the nervous system are involved in skeletal muscle movement? How does motor impulse move throughout the body? What is a “motor unit”? The motor division is involved with the skeletal muscle movement …show more content…
The proteins are set to slide past each other when the muscle relax and contract.

5. Starting from the release of acetylcholine by the motor neuron, what are the steps in muscle contraction? How is contraction ended?
First the muscle binds to the receptors on the motor end plate, which then causes the electrical potential causing the plate to change and initiate an action that passes in both directions along the muscle fibers. Then the tubules on the muscle fiber surface open, then ATP is released inside the muscle fiber. From there calcium ions are released at each point where the tubules touch the sarcoplasmic reticular . A contraction ends when a specific enzyme acetylcholinesterase breaks down the …show more content…
Are Kathy’s medical problems related to her sensory neurons, motor neurons, or both? What in Kathy’s medical history supports your answer? Kathy's medical problems are both the sensory and motor related. Her sensory neurons are responsible for the numbing and tingling sensation that she’s experiencing , whereas her motor neurons are responsible for her not being able to stand up properly.

What is myelin and how does it affect the transmission of nerve impulses? Identify the cells responsible for the formation of myelin. Myelin is a layer of protein and fatty acid that surrounds nerves and allow pulse to travel more quickly. The cell responsible for myelin formation is called Glial cell.

8. What are the “scleroses” in Multiple Sclerosis and where do they occur? How does this influence nerve transmission? The scleroses are the hardening and thickening of a body part; including the either one or both the brain and or the spinal cord. This causes the brain to not be able to receive or send messages.

9. How do an MRI and spinal tap help confirm the diagnosis of Multiple Sclerosis?
An MRI can help identify if there is any lesions caused by Multiple Sclerosis. And then a spinal tabs can take liquid out to get
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