Humerus
227807
225325266
2008-07-13T02:45:09Z
Andy Christ
70717
/* Popular culture */
{{Infobox Bone
| Name = Humerus
| Latin =
| GraySubject = 51
| GrayPage = 209
| Image = Illu_upper_extremity.jpg
| Caption = Upper extremity
| Image2 = HumerusFront.png
| Caption2 =
| Articulations =
| MeshName = Humerus
| MeshNumber = A02.835.232.087.090.400
| DorlandsPre =
| DorlandsSuf =
}}
{{selfref|"Funny Bone" redirects here. For the comedy-drama film, see [[Funny Bones]].}}
The '''humerus''' is a [[long bone]] in the [[arm]] or [[forelimb]] that runs from the [[shoulder]] to the [[elbow]].
Anatomically, it connects the [[scapula]] and the [[ulna]], and consists of the following three sections:
* [[Upper extremity of humerus]]
* [[Body of humerus]]
* [[Lower extremity of humerus]]
== Muscle insertions and origins ==
* The [[deltoid]] originates on the lateral 1/3rd of the clavicle,acromion and the spine of the scapula, it is inserted on the [[deltoid tuberosity]] of the humerus and has several actions including abduction, extension, and rotation
* [[Pectoralis major]], [[teres major]] and [[latissimus dorsi]] insert at the ''intertubercular groove'' of the humerus. They work to adduct and medially rotate the humerus.
* [[Biceps brachii]], [[brachialis]], [[coracobrachialis]], and [[brachioradialis]] (which attaches very distally) act to flex the elbow. The [[biceps brachii|biceps]], however, does not attach to the humerus.
* [[Triceps brachii]] and [[anconeus]] extend the elbow, and attach to the posterior side of the humerus.
== Clinical considerations ==
The most common type of shoulder dislocation is an anterior or inferior dislocation of the humerus of the [[glenohumeral joint]]. This dislocation has the potential to injure the [[axillary nerve]] or [[axillary artery]]. Signs and symptoms of this dislocation include a loss of the normal shoulder contour and a palpable depression under the acromion.
==Funny bone==
The [[ulnar nerve]] at the distal end of the humerus near the elbow is sometimes referred to in popular culture as 'the funny bone'. Striking this nerve can cause a tingling sensation ("funny" feeling), and sometimes a significant amount of pain.
==See also==
*[[Hill-Sachs lesion]]
==Additional images==
<gallery>
Image:Shoulderjoint.PNG|Diagram of the human shoulder joint
Image:Human arm bones diagram.svg|Human arm bones diagram
Image:Humerus ant.jpg|Humerus (right) - anterior view
Image:Humerus post.jpg|Humerus (right) - posterior view
Image:HumerusFront.png|Left humerus. Anterior view.
Image:HumerusBack.png|Left humerus. Posterior view.
Image:Gray326.png|The left shoulder and acromioclavicular joints, and the proper ligaments of the scapula.
Image:Gray413_color.png|Cross-section through the middle of upper arm.
Image:Gray420.png|The Supinator.
</gallery>
{{Gray's}}
{{Bones of upper extremity}}
[[Category:Bones of thoracic limb]]
[[Category:Long bones]]
[[ar:عظم عضد]]
[[bn:প্রগণ্ডাস্থি]]
[[ca:Húmer]]
[[cs:Pažní kost]]
[[da:Humerus]]
[[de:Oberarmknochen]]
[[dv:މުލައްދަނޑި ކަށިގަނޑު]]
[[es:Húmero]]
[[eo:Humero]]
[[fr:Humérus]]
[[id:Tulang lengan atas]]
[[it:Omero (anatomia)]]
[[he:עצם הזרוע]]
[[la:Humerus]]
[[lt:Žastikaulis]]
[[hu:Felkarcsont]]
[[nl:Opperarmbeen]]
[[ja:上腕骨]]
[[no:Humerus]]
[[pl:Kość ramienna]]
[[pt:Úmero]]
[[sk:Ramenná kosť]]
[[sl:Nadlahtnica]]
[[fi:Olkaluu]]
[[sv:Överarmsben]]
[[te:భుజాస్థి]]
[[th:กระดูกต้นแขน]]
[[tr:Humerus]]
[[uk:Плечова кістка]]
[[zh:肱骨]]