The ulna is ossified from three centers: one each for the body, the wrist end, and the elbow end, near the top of the olecranon. Ossification begins near the middle of the body of the ulna, about the eighth week of fetal life, and soon extends through the greater part of the bone.

Dec 9, 2022 · What is the ulna? The ulna is the longer of the two bones in your forearm. It helps you move your arm, wrist and hand. Your ulna also supports lots of important muscles, …

Aug 25, 2018 · The ulna ossifies from three different centers, with the primary center for the shaft appearing around the eighth week of fetal life. The secondary centers for the distal and proximal ends appear around 5-7 years and 8-10 years of age, respectively.

Oct 1, 2024 · Overview of the anatomical position of the ulna in the upper limb. Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. The proximal end of the ulna articulates with the trochlea of the humerus.

O rádio e a ulna constituem os ossos do antebraço. A região antebraquial, como é clinicamente conhecida, abrange a região que se estende do cotovelo ao punho. O rádio é o osso mais lateral, enquanto a ulna é o osso mais medial do antebraço.

Jul 24, 2023 · The ulna is one of the two forearm long bones that, in conjunction with the radius, make up the antebrachium. The bone spans from the elbow to the wrist on the medial side of the forearm when in anatomical position. In comparison to the radius, the ulna is described to be larger and longer.

Jan 11, 2024 · Ulna (plural: ulnae; pronúncia: úl-nu) é um dos dois ossos primários que formam os antebraços em humanos, sendo o outro o rádio. Existe um osso da ulna em cada braço. É um osso longo [1] e é vital na formação das articulações do punho e do cotovelo [2].

Sep 19, 2021 · The ulna (plural: ulnae) is one of the two long bones of the forearm, located medially in the supinated anatomic position. It has a larger proximal end and tapers to a smaller distal end (opposite to the radius). Prominent features of the ulna include: Anteriorly. Posteriorly.

Jan 28, 2025 · The ulna is a crucial component of the forearm’s skeletal structure, primarily responsible for forming the elbow joint with the humerus and contributing to the wrist joint.

Dec 10, 2024 · O antebraço é formado por dois ossos longos situados lado a lado, sendo o rádio lateral e a ulna medial. Estão unidos pela membrana interóssea, estendida entre eles. Ambos se articulam com o úmero, supe­riormente, embora a ulna seja preponderante na formação da articulação do cotovelo.