acromion n : the outermost point of the spine of the shoulder blade [syn: acromial process] [also: acromia (pl)]
In humansIt is a continuation of the scapular spine, and hooks over anteriorly.
The acromion forms the summit of the shoulder, and is a large, somewhat triangular or oblong process, flattened from behind forward, projecting at first lateralward, and then curving forward and upward, so as to overhang the glenoid cavity.
- Its inferior surface is smooth and concave.
- Its lateral border is thick and irregular, and presents three or four tubercles for the tendinous origins of the Deltoideus.
In animalsThe acromion process of bats (Mammalia: Chiroptera) is particularly elongated compared to that of humans.
Image:Human arm bones diagram.svg|Human arm bones diagram
acromion in Catalan: Acròmion
acromion in French: Processus d'acromion
acromion in Galician: Acromion
acromion in Indonesian: Acromion
acromion in Italian: Acromion
acromion in Russian: Акромион
acromion in Thai: อโครเมียน
acromion in Ukrainian: Акроміон