Anterior view of the left shoulder and acromioclavicular joints, and proper scapular ligaments. The glenohumeral (GH) joint is a true synovial ball-and-socket style diarthroidal joint that is responsible for connecting the upper extremity to the trunk.It is one of four joints that comprise the shoulder complex.This joint is formed from the combination of the humeral head and the glenoid fossa of the scapula.ogether, the joint capsule and the ligaments of the GH joint work to provide a passive restraint to keep the humeral head in contact with the glenoid fossa.
Insects, arachnids, centipedes and crustaceans are all arthropods.   An arthropod is an invertabrate animal that has an exoskeleton, a segmented body, and jointed appendages.    An ANTHROPOD is a bipedal humanoid (ie Homo Sapien, Homo Neanderthalus, Homo Habilus, Australopithicene Afarensis, and other hominids).irds, reptiles, fish, and even sometimes other arthropods eat each other.
PHYLUM ARTHROPODA. The arthropods are the most numerous of the animal phyla, including nearly one million known species (and more are being discovered all of the time!) Arthropods are found in almost all conceivable habitats, and feed on a great variety of materials. The arthropods are the only group of invertebrates to fully adapt to terrestrial life. All arthropods are characterized by the presence of a rigid, chitinous body covering called an exoskeleton. Primitively, the arthropod body plan consisted of a number of segments (as in annelids), each segment probably bearing one pair of jointed appendages.