beginning
In this article, I will explain the “radial nerve” in detail.
The radial nerve is a nerve that starts near the upper arm and reaches the hand through the forearm, and plays an important role in controlling hand and finger movements. This nerve enables many basic movements, such as feeling the back of the hand, stretching the fingers, and stretching the wrist. Radial nerve disorders can cause problems such as wrist drops (a condition where wrist strength decreases or wrist control becomes impossible). The reasons include rupture or compression, but with accurate diagnosis and proper treatment, function is often recoverable. Please use this article to deepen your understanding of the body.
Click here to watch a video about the radial nerve (radial nerve)
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What is the radial nerve
The radial nerve is one of the important nerves responsible for movement and sensation in the hand and forearm. This nerve is one of the main nerves that make up the arm, and enables detailed movements such as wrist rotation and finger extension.
How to read radial nerve
The radial nerve is read as “tokotsu shinkei.” The Japanese name comes from the fact that this nerve runs along the radius (trunk).
Characteristics of the radial nerve
The most notable characteristic of the radial nerve is its wide area of control. Not only does it play an important role in stretching the back of the hand, fingers, and wrist extension ability, it is also involved in sensory function.
Location and position of the radial nerve
It has a long path beyond the radial elbow, passing through the back of the forearm and leading to the fingertips. It has a long path through the forearm to the fingertips. Using a human anatomy diagram, you can learn the exact location and path of this nerve in detail.
How to remember the radial nerve
One way to remember the location of the radial nerve is to imagine “parents leading children to their wrists.” It's easier to remember if you imagine the path from your thumb through the inside of your arm and along your forearm to reach your upper arm.
English and Latin for radial nerve
The radial nerve is expressed as “radial nerve” in English and “Nervus radialis” in Latin. This name comes from the Latin word “radius” (meaning radius), and as the name suggests, it is a nerve that runs along the radius.
Trivia about the radial nerve
The radial nerve is one of the nerves that is susceptible to damage due to some kind of accident or compression. The phenomenon “Saturday Night Paralysis” indicates a state where hand movement is temporarily restricted as a result of compression of the radial nerve.
Tissues associated with the radial nerve: characteristics of the forearm muscles
The forearm muscles are mainly for controlling hand movements. Among these, the muscle group controlled by the radial nerve is responsible for wrist extension, finger extension in the direction of the back of the hand, and wrist abduction (radial deviation: movement of moving the wrist outward). These muscles are extremely important in everyday life, and are essential for movements such as grasping, lifting, writing, and hitting a keyboard.
Tissue associated with the radial nerve: location and position of forearm muscles
There are multiple muscles innervated by the radial nerve in the forearm. These are located on the posterior side (dorsal side) of the forearm and are particularly involved in wrist extension and finger extension. Specifically, it includes brachial radial muscle, long/short radial carpal extensor muscle, total finger extensor muscle, ulnar carpal extensor muscle, etc. These muscles start in the middle of the forearm and extend their tendons towards the wrist.
Tissues associated with the radial nerve: forearm muscle trivia
Forearm muscles are an essential part of controlling fine movements, and since these muscles are controlled by the radial nerve, if the radial nerve is compressed or damaged, there is a possibility that hand function will be greatly affected. For example, radial nerve injury can cause “drop hand” syndrome, which refers to a condition where the wrist becomes difficult to stretch and the hand sags. Maintaining the health of your forearm muscles is very important in living your daily life.
Radial nerve quiz and correct answers
Q1What part of the body is the radial nerve located in?
Correct answer: It starts on the inside of the upper arm and runs through the forearm to the fingertips.
summary
This time, I explained the location and location of the “radial nerve”, how to memorize it, and the English/Latin notation.
How was it?
I would be happy if reading this article deepened my understanding of anatomy.
Learning is a long, never-ending journey, but I sincerely wish you all the best. Let's continue to study together and work hard for the national exam!
Please look forward to the next blog.
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