SkeletOn Arms

R Scapula

The scapula is commonly referred to as the shoulder blade. It connects the humerus bone of the arm to the collarbone. There are only three muscles that are responsible for enabling the movement of the shoulder blade.      Source       

R Clavicle

The shoulder is the most mobile joint in the human body; however, the extreme range of its potential movements makes the shoulder joint susceptible to dislocation. One of the bones that meet at the shoulder is the clavicle, which is also known as the collarbone. The collarbone is long, thin, and located at the base of the neck. One of the main functions of the collarbone is to hold the arms freely and supported, away from the trunk. Fractures of the collarbone are common. A fracture is easy to detect because the clavicle lies directly under the skin, making any deformity immediately visible. Symptoms of a fractured collarbone include tenderness, swelling, and an inability to move the arm.      Source

R Humerus

The humerus is the long bone in the upper arm. It is located between the elbow joint and the shoulder. At the elbow, it connects primarily to the ulna, as the forearm’s radial bone connects to the wrist. At the shoulder, the humerus connects to the frame of the body via the glenoid fossa of the scapula. the humerus supports all lifting and physical activities. The humerus is one of the longest bones in the body. This means it is also one of the most commonly broken or fractured.      Source

R Radius

The forearm contains two major bones. One is the ulna, and the other is the radius. In concert with each other, the two bones play a vital role in how the forearm rotates. The ulna primarily connects with the humerus at the elbow joint, while the radius primarily junctions with the carpal bones of the hand at the wrist joint. Due to the human instinct to break a fall by outstretching the arms, the radius is one of the more frequently fractured bones in the body. Also, dislocation issues with both the wrist and the elbow may arise. The radius is part of two joints: the elbow and the wrist.      Source

R Ulna

The ulna is the longer, larger and more medial of the lower arm bones. Many muscles in the arm and forearm attach to the ulna to perform movements of the arm, hand and wrist. Movement of the ulna is essential to such everyday functions as throwing a ball and driving a car. The ulna extends through the forearm from the elbow to the wrist, narrowing significantly towards its distal end. At its proximal end it forms the elbow joint with the humerus of the upper arm and the radius of the forearm. The ulna extends past the humerus to form the tip of the elbow, known as the olecranon. Functionally, the ulna provides muscle attachment sites for over a dozen muscles in the upper arm and forearm. In the upper arm, the triceps brachii and anconeus muscles form insertions at the olecranon to extend the forearm at the elbow. The brachialis muscle has its insertion on the coronoid process to flex the arm at the elbow. Many muscles that act on the hand and wrist have their origins on the ulna, including the pronators, supinators, flexors and extensors.      Source

L Scapula

The scapula is commonly referred to as the shoulder blade. It connects the humerus bone of the arm to the collarbone. There are only three muscles that are responsible for enabling the movement of the shoulder blade.       Source   

L Clavicle

 The shoulder is the most mobile joint in the human body; however, the extreme range of its potential movements makes the shoulder joint susceptible to dislocation. One of the bones that meet at the shoulder is the clavicle, which is also known as the collarbone. The collarbone is long, thin, and located at the base of the neck. One of the main functions of the collarbone is to hold the arms freely and supported, away from the trunk. Fractures of the collarbone are common. A fracture is easy to detect because the clavicle lies directly under the skin, making any deformity immediately visible. Symptoms of a fractured collarbone include tenderness, swelling, and an inability to move the arm.      Source

L Humerus

The humerus is the long bone in the upper arm. It is located between the elbow joint and the shoulder. At the elbow, it connects primarily to the ulna, as the forearm’s radial bone connects to the wrist. At the shoulder, the humerus connects to the frame of the body via the glenoid fossa of the scapula. the humerus supports all lifting and physical activities. The humerus is one of the longest bones in the body. This means it is also one of the most commonly broken or fractured.      Source

L Radius

The forearm contains two major bones. One is the ulna, and the other is the radius. In concert with each other, the two bones play a vital role in how the forearm rotates. The ulna primarily connects with the humerus at the elbow joint, while the radius primarily junctions with the carpal bones of the hand at the wrist joint. Due to the human instinct to break a fall by outstretching the arms, the radius is one of the more frequently fractured bones in the body. Also, dislocation issues with both the wrist and the elbow may arise. The radius is part of two joints: the elbow and the wrist.      Source 

L Ulna

The ulna is the longer, larger and more medial of the lower arm bones. Many muscles in the arm and forearm attach to the ulna to perform movements of the arm, hand and wrist. Movement of the ulna is essential to such everyday functions as throwing a ball and driving a car. The ulna extends through the forearm from the elbow to the wrist, narrowing significantly towards its distal end. At its proximal end it forms the elbow joint with the humerus of the upper arm and the radius of the forearm. The ulna extends past the humerus to form the tip of the elbow, known as the olecranon. Functionally, the ulna provides muscle attachment sites for over a dozen muscles in the upper arm and forearm. In the upper arm, the triceps brachii and anconeus muscles form insertions at the olecranon to extend the forearm at the elbow. The brachialis muscle has its insertion on the coronoid process to flex the arm at the elbow. Many muscles that act on the hand and wrist have their origins on the ulna, including the pronators, supinators, flexors and extensors.      Source