Uber Anatomy Ontology

Last uploaded: March 22, 2024
Preferred Name

humeroulnar joint

Synonyms

humero-ulnar joint

articulatio humeroulnaris

Definitions

The humeroulnar joint, is part of the elbow-joint or the Olecron Joint, between the ulna and humerus bones is the simple hinge-joint, which allows for movements of flexion, extension and circumduction. The Humero-Ulnar Joint is the junction of trochlear notch of the ulna and the trochlea of the humerus. Owing to the obliquity of the trochlea of the humerus, this movement does not take place in the antero-posterior plane of the body of the humerus. When the forearm is extended and supinated, the axis of the arm and forearm are not in the same line; the arm forms an obtuse angle with the forearm. During flexion, however, the forearm and the hand tend to approach the middle line of the body, and thus enable the hand to be easily carried to the face. The accurate adaptation of the trochlea of the humerus, with its prominences and depressions, to the semilunar notch of the ulna, prevents any lateral movement. Flexion is produced by the action of the Biceps brachii and Brachialis, assisted by the Brachioradialis, with a tiny contribution from the muscles arising from the medial epicondyle of the humerus. Extension is produced by the Triceps brachii and AnconC&us, with a tiny contribution from the muscles arising from the lateral epicondyle of the humerus, such as the Extensor digitorum communis.

ID

http://purl.obolibrary.org/obo/UBERON_0011110

connects

http://purl.obolibrary.org/obo/UBERON_0000976

http://purl.obolibrary.org/obo/UBERON_0001424

database_cross_reference

Wikipedia:Humeroulnar_joint

SCTID:303064006

FMA:38854

definition

The humeroulnar joint, is part of the elbow-joint or the Olecron Joint, between the ulna and humerus bones is the simple hinge-joint, which allows for movements of flexion, extension and circumduction. The Humero-Ulnar Joint is the junction of trochlear notch of the ulna and the trochlea of the humerus. Owing to the obliquity of the trochlea of the humerus, this movement does not take place in the antero-posterior plane of the body of the humerus. When the forearm is extended and supinated, the axis of the arm and forearm are not in the same line; the arm forms an obtuse angle with the forearm. During flexion, however, the forearm and the hand tend to approach the middle line of the body, and thus enable the hand to be easily carried to the face. The accurate adaptation of the trochlea of the humerus, with its prominences and depressions, to the semilunar notch of the ulna, prevents any lateral movement. Flexion is produced by the action of the Biceps brachii and Brachialis, assisted by the Brachioradialis, with a tiny contribution from the muscles arising from the medial epicondyle of the humerus. Extension is produced by the Triceps brachii and AnconC&us, with a tiny contribution from the muscles arising from the lateral epicondyle of the humerus, such as the Extensor digitorum communis.

depiction

http://upload.wikimedia.org/wikipedia/commons/9/97/Gray329.png

has_exact_synonym

humero-ulnar joint

articulatio humeroulnaris

has_obo_namespace

uberon

id

UBERON:0011110

in_subset

http://purl.obolibrary.org/obo/uberon/core#pheno_slim

label

humeroulnar joint

notation

UBERON:0011110

part_of

http://purl.obolibrary.org/obo/UBERON_0001490

prefLabel

humeroulnar joint

treeView

http://purl.obolibrary.org/obo/UBERON_0001490

subClassOf

http://purl.obolibrary.org/obo/UBERON_0002217

http://purl.obolibrary.org/obo/UBERON_0000982

http://purl.obolibrary.org/obo/UBERON_0003839

http://purl.obolibrary.org/obo/UBERON_0011139

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