Editing Humerus (section)

{{short description|Long bone of the upper arm}}
{{Redirect-distinguish|Humeral|humoral immunity}}
{{Infobox bone
| Name          = Humerus
| Latin         = humerus
| Image         = Humerus - anterior view.png
| Caption       = Position of humerus (''shown in red'')<br />
                  from an anterior viewpoint
| Articulations =
}}

The '''humerus''' ({{IPAc-en|ˈ|h|juː|m|ər|ə|s}}; {{plural form}}: '''humeri''') is a [[long bone]] in the [[arm]] that runs from the [[shoulder]] to the [[elbow]]. It connects the [[scapula]] and the two bones of the lower arm, the [[radius (bone)|radius]] and [[ulna]], and consists of three sections. The '''humeral''' [[upper extremity of humerus|upper extremity]] consists of a rounded head, a narrow neck, and two short processes ([[tubercle]]s, sometimes called tuberosities). The [[body of humerus|body]] is cylindrical in its upper portion, and more [[prism (geometry)|prism]]atic below. The [[lower extremity of humerus|lower extremity]] consists of 2 [[epicondyle]]s, 2 processes ([[trochlea of the humerus|trochlea]] and [[capitulum of the humerus|capitulum]]), and 3 fossae ([[radial fossa]], [[coronoid fossa]], and [[olecranon fossa]]). As well as its true anatomical neck, the constriction below the greater and lesser tubercles of the humerus is referred to as its [[Surgical neck of the humerus|surgical neck]] due to its tendency to fracture, thus often becoming the focus of surgeons.