Upper extremity can include the shoulder, arm, forearm, wrist, and hand.
What are the four parts of the upper extremity?
Information. For anatomists, the upper limb consists of the arm (the upper arm), the forearm (the lower arm), and the hand. The arm consists of a single bone, the humerus. The forearm consists of two bones, the ulna and radius.
What is upper extremities and lower extremities?
The upper extremities and lower extremities are just fancy names for the arms and the legs. Knowing the clinical anatomy of these structures is important because your future patients need arms and legs to get from place to place and pick up things when they get there.
Which joint is upper extremity?
The upper limb has a wide range of precise movements associated with it to allow us to effectively interact with our environment, the 6 main joints covered here (from proximal to distal) are the sternoclavicular, acromioclavicular, shoulder, elbow, radioulnar, and wrist joints.
What are subparts of upper extremities?
The upper extremity or arm is a functional unit of the upper body. It consists of three sections, the upper arm, forearm, and hand.
What is upper extremity muscles?
The muscles of the upper extremity include those that attach the scapula to the thorax and generally move the scapula, those that attach the humerus to the scapula and generally move the arm, and those that are located in the arm or forearm that move the forearm, wrist, and hand.
What is the function of the upper extremity?
The primary purpose of the upper limb is to move the hand around the body during the activities of life. The shoulder girdle provides a wide range of motion—exceeding a hemisphere–so that the hand may reach in all directions.
What are the divisions of the upper limb?
The upper limb is divided into three regions. These consist of the arm, located between the shoulder and elbow joints; the forearm, which is between the elbow and wrist joints; and the hand, which is located distal to the wrist. There are 30 bones in each upper limb.
What is the upper arm called?
The arm proper (brachium), sometimes called the upper arm, the region between the shoulder and the elbow, is composed of the humerus with the elbow joint at its distal end.
What is the difference between upper and lower extremity?
In the humans, the gross difference in the upper and lower limbs is that the flexor and extensor surfaces and their functional groups of muscles are in the opposite directions i.e. flexor surfaces or muscles in the upper limbs are placed anteriorly whilst in the lower limbs, it is the extensor surfaces or group of …
Is the wrist and upper extremity?
The hand and upper extremity subspecialty relates to the diagnosis and treatment of the hands, wrist, forearm, elbow and shoulder.
What is the lower extremity?
Listen to pronunciation. (LOH-er ek-STREH-mih-tee) The part of the body that includes the leg, ankle, and foot.
Which of the following bones form the upper extremity?
humerus The humerus is the single bone of the upper arm, and the ulna (medially) and the radius (laterally) are the paired bones of the forearm. The base of the hand contains eight bones, each called a carpal bone, and the palm of the hand is formed by five bones, each called a metacarpal bone.
How many muscles are in the upper extremity?
Upper Arm. There are four muscles in the upper arm split into an anterior and posterior compartment.
Which bone is in the upper limb?
The humerus is the single bone of the upper arm region. It articulates with the radius and ulna bones of the forearm to form the elbow joint. Distally, the humerus becomes flattened.
What are the upper extremities of osteoarthritis?
Arthritis can affect any joint in the body. This includes the joints of the shoulder and elbow and the joints between the 29 bones of the wrist, hand, and fingers.
What is the upper extremities of fasciitis?
Necrotizing fasciitis is a potentially fatal soft tissue infection that may affect the upper and lower extremities, scrotum, perineum and abdominal wall. Typically, the infection demonstrates rapid spreading along the fascial planes leading to sepsis with mortality rates of 15-46%.
What is the axilla?
The axilla is an anatomical region under the shoulder joint where the arm connects to the shoulder. It contains a variety of neurovascular structures, including the axillary artery, axillary vein, brachial plexus, and lymph nodes.
Is the shoulder and upper extremity?
Excerpt. The upper extremity or arm is a functional unit of the upper body. It consists of three sections, the upper arm, forearm, and hand. It extends from the shoulder joint to the fingers and contains 30 bones.
What is the most superior upper body muscle?
supraspinatus muscle The supraspinatus muscle, the most superiorly located of the rotator cuff muscles, resides in the supraspinous fossa of the scapula, superior to the scapular spine.
What are the main muscles of the upper body?
Upper Body Muscles
- Trapezius. This is a large triangular shaped muscle that runs from the centre of your back up to the neck, running across your shoulder blade. …
- Rhomboids. …
- Deltoids. …
- Rotator Cuff (Rotators) …
- Pectorals. …
- Biceps. …
- Triceps. …
- Forearm Muscles.
What is the humerus function?
Function. The humerus serves as an attachment to 13 muscles which contribute to the movements of the hand and elbow, and therefore the function of the upper limb.
What are the upper and lower limbs?
Information. For anatomists, the lower limb consists of the thigh (the upper leg), the leg (the lower leg), and the foot. The thigh consists of a single bone, the femur. The leg consists of two long bones, the tibia and fibula, and the sesamoid bone, the patella, that serves as the knee cap.
What is above the elbow called?
The outside, or lateral, bump just above the elbow is called the lateral epicondyle. Most of the muscles that straighten the fingers and wrist all come together in one tendon to attach in this area.