Nerves of the Arm and Hand

Subject: Nerves of the Arm and Hand

What? The hands are major sensory components. The nervous system can send messages to the brain at very high speeds. The speed at which we can remove our hand from a hot surface shows the power of the central and peripheral nervous systems in coordination within the upper body.

Why? (History) The nerves of the arm and hand perform two roles, one in sending the movements of the arms all the way down to the fingers, then also receiving sensory information supplied by the sensory nerves of the hands and fingers. The hands are major sensory components. The nervous system can send messages to the brain at very high speeds. The movements of the arms must be fast, precise, and strong to complete the activities the body engages in throughout the day.

How does it relate to the skin?-Impulses are sent from various parts of the brain and spinal cord; some come from sense organs located in the joints, ligaments, and tendons. Some come from the muscles themselves. They supply impulses to and from the muscles of the forearms and hands and from the skin of the hands. Nerves detect pain, pressure, and changes in temperature and with this information the brain will take the appropriate reaction. Without our nerves we would probably be covered in burns and cuts.

Where does it typically occur?-Major nerve branches from the cervical vertebrae and thoracic vertebrae feed into the shoulders and arms to send and receive information by nerve impulses. The impulses are sent from various parts of the brain and spinal cord. Nerves of the hand and arm originate from the cervical and thoracic vertebrates. The five major nerves are the axillary, musculocutaneous, median, radial, and ulnar nerves. Tiny hand muscles, which perform very delicate and precise movements, are driven by about 200,000 neurons.

When? Implications As major sensory components of the body, the hands are the home for a large portion-of the nerves in this part of the nervous system. Sensory nerve endings detect pressure and temperature through the skin cells of the palm. The body is constantly detects changes in the environment and adjusts itself. The body would slow or stop the process is if there was trauma to the nerves or the nervous system. The axillary, musculocutaneous, median, radial and ulnar nerves are the nerves that carry information in the form of nerve impulses to and from a particular region of the arm and hand.

Who benefits from this? Nerves control the body parts of all living things. Several major nerves start from the arm into the forearm, including the radial, median, and ulnar nerves. These nerves control the forearm muscles that move the hands and fingers through tendons that pass through the wrist.

What causes this? The peripheral nerves in the arms and hands collect information about the external conditions in relation to the body’s internal state, to analyze information. The nerves and sensory receptors allow neurons to gather information about what’s going on with the body. The brain processes the information and responds correctly

How? Solutions Mechanical / Machines) EMG test, MRI’s and CT scans. Surgery may be needed to for more severe damage. Your doctor may also consider electromyography and nerve conduction tests. An EMG measures the electrical activity in your muscle.

How? Solutions (Non Mechanical) Treatment can be as simple as changing the patterns or ways in which the arm is bent or adjusting ones sleeping patterns such as hugging a pillow at night. Early detection may prevent some severe damage from happening. Warning signs of damage are numbness, experiencing lightheadedness, dry eyes and mouth, and feeling weak. Braces, splints, and creams can help as well with injury to the nerves.

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