Table of Contents
What region is the humerus located?
upper arm
The humerus bone is located in the upper arm, between the shoulder joint and the elbow joint. The shoulder joint, also known as the glenohumeral joint, is a ball and socket joint. The ball is the humeral head, and the socket is the glenoid fossa of the scapula.
What is the humerus in anatomy?
The humerus is the largest bone of the upper extremity and defines the human brachium (arm). It articulates proximally with the glenoid via the glenohumeral (GH) joint and distally with the radius and ulna at the elbow joint.
What is the region of the shoulder?
In human anatomy, the shoulder joint comprises the part of the body where the humerus attaches to the scapula, and the head sits in the glenoid cavity. The shoulder is the group of structures in the region of the joint. The shoulder joint is the main joint of the shoulder….
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FMA | 25202 |
Anatomical terminology |
What is the upper arm region called?
humerus
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 distal region of the humerus called?
trochlea
The distal end of the humerus has two articulation areas, which join the ulna and radius bones of the forearm to form the elbow joint. The more medial of these areas is the trochlea, a spindle- or pulley-shaped region (trochlea = “pulley”), which articulates with the ulna bone.
What is the middle region of the humerus?
Shaft or Body (corpus humeri) is the elongagted, cylinder shaped middle portion of the bone. Its relatively smooth surface is the insertion point for muscles that move the upper arm and the origin point for muscles that move the lower arm.
Which region of the humerus articulates with the radius as part of the elbow joint?
Trochlea
Trochlea of the humerus articulates with the ulna and capitulum with the radius to form the elbow joint.
Which of the following is found on the anterior surface of the humerus?
The smaller lesser tubercle of the humerus is found on the anterior aspect of the humerus. Both the greater and lesser tubercles serve as attachment sites for muscles that act across the shoulder joint.
Where is the anterior shoulder?
Anterior shoulder in obstetrics refers to that shoulder of the fetus that faces the pubic symphysis of the mother during delivery. Depending upon the original position of the fetus, either the left or the right shoulder can be the anterior shoulder.
How long does it take to heal a broken humerus?
The aim is rehabilitation to a functional range of movement. Generally recovery takes at least one year but union is expected at 6-8 weeks. Adequate treatment of those at risk of osteoporosis. It is defined as a posterolateral humeral head compression fracture and can occur following anterior shoulder dislocation.
Which portion of the humerus is most susceptible to fracture?
Among the nerves of the thoracic limb, the radial nerve, with its lateral position in the region of the distal humerus, is the most vulnerable to damage from the initial trauma associated with fracture of this region of the humerus.
What are the symptoms of a broken humerus?
An individual with a proximal humerus fracture may experience the following symptoms immediately following the injury: Pain. Swelling. Bruising. Severely restricted movement of the shoulder. Numbness and tingling in the arm, forearm, or hand. Deformity (an unusual appearance) of the upper arm.
Where does the head of humerus attach to?
At the shoulder , the head of the humerus articulates with the glenoid fossa of the scapula . More distally, at the elbow, the capitulum of the humerus articulates with the head of the radius, and the trochlea of the humerus articulates with the trochlear notch of the ulna. Oct 3 2019