Vegetation acts as an interface between the atmosphere and the soil. It increases the permeability of the soil to rainwater, thus decreasing runoff. It shelters the soil from winds, which results in decreased wind erosion, as well as advantageous changes in microclimate.
The shoulder is a ball-and-socket type of joint and is anatomically referred to as the gleno-humeral joint, describing the two bony structures involved. The socket is the glenoid cavity, a cup-shaped piece of bone that juts out from a corner of the shoulder blade (scapula).
a. Coracohumeral ligament: supports the head of the humerus in the glenoid cavity as a rope and assists the glenohumeral ligaments in reinforcing the anterior portion of the glenohumeral joint. Note the coracohumeral ligament as it attaches to the coracoid process and the greater tuberosity of the humerus (Netter: 398).