Posterior
The subscapular fossa is located anterior to the supraspinatus and infraspinatus fossae on the scapula.
The thymus is located behind the sternum, within the mediastinum and in front of the heart. The thymus is a lymphoid gland.
There is an anterior chamber and a posterior chamber to the eye. The anterior chamber is from the lens and iris forward to the back of the cornea. The posterior chamber is from the back of the lens to the retina. The anterior chamber is filled with aqueous. The posterior chamber is filled with vitreous.
....behind/back and antonym would be anterior - in front/front
The dorsal region of the body is located posteriorly.
Thymus
The posterior side
The muscles of the legs do not follow the generalization that extensor muscles are on the posterior and flexor muscles are on the anterior.
A flexor muscle is a muscle which bends or flexes a limb. Most flexor muscles are located on the anterior aspect of the body.
The subscapular fossa is located anterior to the supraspinatus and infraspinatus fossae on the scapula.
thymus
The thymus is located behind the sternum, within the mediastinum and in front of the heart. The thymus is a lymphoid gland.
it is toward the anterior end of a worm
posterior
thymus
The kidneys have their anterior and posterior surfaces. The foremost surface countenances towards the front stomach wall, while the back posterior surfaces confronting the posterior stomach wall. These surfaces are isolated by the edges of the kidney, which are the significant convexity horizontally, and minor concavity medially.
There is an anterior chamber and a posterior chamber to the eye. The anterior chamber is from the lens and iris forward to the back of the cornea. The posterior chamber is from the back of the lens to the retina. The anterior chamber is filled with aqueous. The posterior chamber is filled with vitreous.