Question

The upper extremity is formed by the arm ,forearm and hand .It is connected with thunk by the shoulder girdle

Answer 1

Верхняя конечность состоит из плеча, предплечья и кисти, связанных с туловищем плечевым поясом.

Answer 2

The upper extremity consists of the arm, forearm, and hand, and it is connected to the trunk by the shoulder girdle. Let's break down each component:

Arm:

The arm is the upper limb between the shoulder and the elbow. It consists of a single long bone called the humerus, which is the largest bone in the upper extremity. The humerus connects the shoulder joint to the elbow joint and provides attachment points for various muscles.

Forearm:

The forearm is the region between the elbow and the wrist. It contains two long bones called the radius and ulna. The radius is located on the thumb side of the forearm, while the ulna is on the pinky side. These bones allow for the rotation of the forearm and provide attachment points for muscles that control wrist and finger movements.

Hand:

The hand is the distal part of the upper extremity and consists of the wrist, palm, and fingers. The wrist is made up of eight small bones called carpal bones, which form the carpal tunnel. The palm of the hand contains five metacarpal bones, which connect the wrist to the fingers. The fingers consist of three phalanges (proximal, middle, and distal) except for the thumb, which has two phalanges.

Shoulder Girdle:

The shoulder girdle connects the upper extremity to the trunk. It consists of the clavicle (collarbone) and scapula (shoulder blade). The clavicle connects the sternum (breastbone) to the scapula, while the scapula provides attachment points for muscles that move the arm and stabilize the shoulder joint.

In summary, the upper extremity is formed by the arm, forearm, and hand, and it is connected to the trunk by the shoulder girdle. The arm consists of the humerus, the forearm contains the radius and ulna, and the hand includes the wrist, palm, and fingers. The shoulder girdle, made up of the clavicle and scapula, connects the upper extremity to the trunk.