ok ok ok

so today i start new series of posts,an item of anatomy a day. i am being all tricksies because i will now be using my blog as a learning tool and it also gets me updating on a regular basis, and of course it will keep you all glued to my every entry as you will really want to know the ins and outs of anatomy(sic).

today we shall go with the deltoid as i know this one and i do not have to look it up.

origin(the fixed point of the muscle,the origin and insertion can actualy flip flop on some muscles depending on what is moving)- lateral clavicle,lateral portion of the spine of the scapula(shoulder blade) and the acromion which is where the clavicle meets the scapula at the AC(acromioclavicular) joint. on a side note,if one scoots down the clavicle medialy to where it meets th sternum at theSC(strernoclavicular) joint,this is the only bony contact your shoulder-arm assembly makes with the skeleton.

the insertion(the attachment of the muscle on the part that moves) of the deltoid is on the deltoid tuberosity(large rounded protuberance on a bone) on the lateral surface about third of the way down of the humerus(that be the arm bone).

the deltoid itself is the muscle that caps your shoulder and is a very robust muscle,rarely having any pathologies,so that pain you are having there ain't the deltoid.

it is responsible for flexing the GH( glenohumeral) joint( the technical name for the joint as the head of the humerus sits in the glenoid fossa of the scapula),extending the GH joint,abduct the arm,horizontally adduct the arm,flex and extend the shoulder and finally,lateraly and medially totate the shoulder. the long and short of it is that if yuo move your arm,the deltoid is doing something.

wow that was dry,i am sure you are all waiting with bated breath for tomorrows entry.