Upper Limb Anatomy Quiz

The clavicle is a bone that forms the front part of the shoulder joint. It is often referred to as the "collar bone" and connects the shoulder to the breastbone.

The acromioclavicular joint is where the clavicle meets the scapula. It is formed by the articulation of the lateral extremity of the clavicle with the acromion of the scapula.

The clavicle ossifies through intramembranous ossification. This process involves the formation of bone directly from a membrane, rather than cartilage.

The scapula is a flat, triangular bone located in the upper back. It serves as a major attachment point for numerous muscles.

The scapula undergoes endochondral ossification, meaning it develops from a cartilaginous model.

The radius is the bone on the thumb side of your forearm, responsible for bearing weight and forming several key joints. It's thicker than the ulna, which sits on the pinky side.

The radius forms connections at the elbow, radioulnar joint, and the wrist. It helps with the flexibility of the wrist, crucial for fine movements.

The radius connects to the ulna (thumb side vs. pinky side) to allow for rotation movements, like turning a doorknob.

Fractures often occur in the radius due to its weight-bearing nature. It's a common injury from falls or direct impact.

The radius is vital for wrist movement due to its larger contribution compared to the ulna.

The coracoid process of the scapula serves as an attachment point for 4 key structures: the coracobrachialis muscle, short head of the biceps brachii muscle, the pectoralis minor muscle, and the coracoacromial ligament.

The long head of the triceps brachii muscle attaches to the infraglenoid tubercle, a bony projection located just below the glenoid cavity of the scapula.

The serratus anterior, rhomboid major, rhomboid minor, and levator scapulae muscles all attach to the medial border of the scapula, playing a vital role in scapular movement and stability.

The humerus, the longest bone in the upper limb, acts as the link between the shoulder and elbow joints, allowing for a wide range of arm movement.

The humerus starts forming in the womb by the 8th week, with 8 different ossification centers contributing to its development.

A break in the lower end of the radius bone, commonly caused by a fall on an outstretched hand, often seen in women over 50.

The distal (lower) fragment of the radius is displaced upward and backward causing a distinctive 'dinner fork' deformity.

The carpus is a collection of eight small bones arranged in two rows, forming the wrist joint.

The scaphoid and lunate, two of the eight carpal bones, directly articulate with the radius bone at the wrist.

The clavicle, or collarbone, connects the shoulder to the breastbone, providing support and stability to the shoulder joint.

A large, long bone in the upper arm that forms the shoulder joint.

The deltoid muscle attaches to this bumpy area on the humerus.

The long head of the biceps brachii muscle originates here, a groove on the humerus.

This nerve can be injured during a fracture of the surgical neck of the humerus.

A fracture just above the elbow, often occurring in children, that can compress the brachial artery and median nerve.

The ulna is one of the two bones in the forearm, and it's the longer one.

This is the area on the humerus where the radial nerve runs, and can be damaged by a fracture in that area.

This part of the medial epicondyle is sensitive, and a hit to it can cause pain and tingling down the arm.