#skeletal structure

• Actinacanth — A zoological term used to describe an organism, an anatomical structure, or a skeletal element provided with spines, spicules, or sharp extensions arranged in a radiating manner. In the context of paleontology and aquatic taxonomy, it specifically describes the morphology of certain radiolarians, sponges, or ancient marine fauna whose rigid support elements emerge from a common center in the shape of stinging rays.
• Alciform — Having the form or appearance of an elk or moose (Alces alces) or its antlers; palmate, widened, or flattened. In animal or structural morphology, the term describes skeletal elements or bony excrescences of fossil or contemporary species whose branches resemble the specific structure of elk antlers.
• Antebrachial — Belonging to the forearm, relating to the forearm; the anatomical segment located between the elbow joint and the wrist joint. In medical and surgical terminology, it describes the bone structures (radius and ulna), muscle bundles, blood vessels, or nerve branches that serve this specific region of the upper limb.
• Articular — Pertaining to or characteristic of a joint; structurally located at the junction of two or more bones. In a clinical sense, it describes anatomical elements, pathological modifications, or inflammatory and degenerative processes localized within the capsules, cartilages, or ligaments of the locomotor system.
• Autopod — The terminal, distal, and structural segment of the pentadactyl limb in vertebrates, structurally corresponding to the hand (in the forelimb) or the foot (in the hindlimb). This complex anatomical region includes the carpal/tarsal bones, metacarpal/metatarsal bones, and the phalanges of the digits, possessing a remarkable evolutionary plasticity that allowed diversified species adaptations for walking, running, swimming, or flying.