which kind of muscles would contract to allow you to strech out your fingers( as if you were indicating the number five)?pronation extension adduction supination
The muscles that would contract to allow you to stretch out your fingers in the shape of indicating the number five are muscles involved in finger extension. These muscles are located in the forearm and include the extensor digitorum, extensor indicis, and extensor digiti minimi.
To stretch out your fingers as if indicating the number five, the muscles involved are primarily responsible for extension. Extension is the movement that increases the angle between two body parts. In this case, it involves straightening or stretching out the fingers. Therefore, the muscles that contract to allow this movement are the extensor muscles.
The extensor muscles responsible for finger extension are located on the dorsal (back) side of the forearm. They include:
1. Extensor Digitorum: This muscle extends the fingers and is responsible for extending the four fingers (excluding the thumb).
2. Extensor Indicis: The extensor indicis is a long, slender muscle that primarily extends the index finger.
3. Extensor Pollicis Longus: This muscle extends the thumb.
When these muscles contract, they pull on tendons that attach to the fingers and thumb, causing them to extend or stretch out.
To determine the kind of muscles that contract to stretch out your fingers (as if indicating the number five), we need to understand the movement and the muscles involved.
In this case, the movement involves extending or straightening the fingers. The muscles responsible for finger extension are located on the back of the forearm, known as the extensor muscles. These muscles allow you to open up and spread your fingers apart.
Therefore, the correct answer from the given options is "extension." The other options, pronation, adduction, and supination, refer to different movements in the body and are not directly involved in finger extension.
To recall this information in the future, you can remember that when you want to stretch out your fingers, think about extending them, which activates the extensor muscles located in the back of the forearm.