What is the function of the humerus?

What is the function of the humerus?

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 bone does the humerus articulate with?

The humerus articulates with the scapula proximally at the glenohumeral joint so it participates in the movements of the shoulder. Also, the humerus has distal articulations with the radius and ulna at the elbow joint.

What type of bone is the ulna?

long bone
The ulna forms the skeleton of the medial part of the forearm and is a long bone, consisting of an expanded proximal end, a shaft and a head at the distal end.

What type of bone is the humerus?

Your humerus is classified as a long bone. Other types of long bones include the radius and ulna in your forearm and the femur in your upper leg. Speaking of long, the humerus is the longest bone in your arm.

What movement occurs at the humerus?

The humerus works in conjunction with these muscles to raise forward and lower (also called flexion and extension) the upper arm, raise laterally and lower (also called abduction and adduction) the upper arm, move the arm in small and large circular motions (also called circumduction), and rotate inward or outward ( …

What muscles insert on the humerus?

The pectoralis major, teres major, and latissimus dorsi insert at the intertubercular groove of the humerus. They work to adduct and medially, or internally, rotate the humerus. The infraspinatus and teres minor insert on the greater tubercle, and work to laterally, or externally, rotate the humerus.

Which of the following muscles inserts on the humerus?

Is humerus axial or appendicular?

It’s everything that attaches on to the axial skeleton. Think “appendages”. The pelvis, femur, fibula, tibia and all of the foot bones as well as the scapula, clavicle, humerus, radius, ulna and all of the hand bones are classified as appendicular.

What are processes of the ulna?

Near the elbow, the ulna has two curved processes, the olecranon and the coronoid process; and two concave, articular cavities, the semilunar and radial notches. The olecranon is a large, thick, curved eminence, situated at the upper and back part of the ulna.

What muscles attach to the ulna?


  • Pronator teres – the medial surface of the coronoid process.
  • Flexor carpi ulnaris – olecranon process.
  • Flexor digitorum superficialis – coronoid process.
  • Flexor digitorum profundus – anteromedial surface.
  • Pronator quadratus – distal anterior shaft.
  • Extensor carpi ulnaris – posterior border.
  • Supinator – proximal ulna.

What muscles originate on the humerus?

The muscles in the superficial posterior compartment of the forearm (superficial posterior extensor compartment of the forearm) originate on the humerus. These are the extensor radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and the extensor carpi ulnaris.

Which of the following muscles does not insert on the humerus?

Which of the following muscles does not attach to the humerus? (e) Pectoralis major.

¿Cuántos músculos se insertan en el húmero?

En el húmero, se insertan 28 músculos: El músculo supraespinoso , se origina en la espina de la escápula. Este se Inserta en la cara superior del tubérculo mayor humeral.

¿Cuáles son las patologías del hueso húmero?

Patología del hueso húmero Algunas patologías pueden afectar el húmero: micromelia significa una extremidad que es menor que el tamaño promedio, a diferencia del resto del cuerpo. Una micromelia del húmero puede ser de origen hereditario. Una fractura del húmero es posible en caso de traumatismo (caída o accidente cerebrovascular directo).

¿Cuál es el hueso más largo de los miembros superiores?

Es el hueso más largo de los miembros superiores, este forma del esqueleto del brazo y esta delimitado principalmente por la parte superior por la articulación glenohumeral como le conocemos, el hombro; y por la inferior por la articulación húmero-cúbito-radial o codo.

¿Cuál es el cuerpo del húmero?

Cuerpo del húmero: Está ubicado entre las dos epífisis del hueso, presenta una Cara cara anteromedial, una cara anterolateral y una cara posterior.