The part of the limb upon which an animal stands when resting. A comparison of the foot in various animals…
"The humerus, which moves freely by a globular head upon the scapula, forming the shoulder-joint." —…
"Section through a portion of the lateral eye of Limulus, showing three ommatidia—A, B and C.…
"Section through one of the central eyes of a young Limulus. L, Cuticular or corneous lens. hy, Epidermic…
"The skeleton of the trunk and the limb arches seen from the front. C, clavicle; S, scapula; Oc, innominate…
"The bones of the arm. a, humerus; b, ulna; c, radius; d, the carpus; e, the fifth metacarpal; f, the…
The Human Skeleton. Labels: a, parietal bone; b, frontal; c, cervical vertebrae; d, sternum; e, lumbar…
The human scapula bone (shoulder blade). Labels: 1, glenoid cavity; 2, end of the spine of scapula.
The human humerus bone, the longest and largest bone of the upper leg. Labels: a, rounded head; gt,…
The Ulna and Radius. Labels: 1, radius; 2, ulna; o, olecranon process, on the anterior surface of which…
Bones of the Wrist and Hand. Labels: m, metacarpal bones; p, phalanges; 3, bones of wrist.
The Os Innominatum, or nameless bone, so called from bearing no resemblance to any known object, is…
The Femur (upper leg bone) is the longest, largest, and strongest bone in the skeleton. Labels: b, rounded…
Bones of the Ankle and Foot. Labels: m, metatarsal bones; p, phalanges; ca, os calcis, or heel bone.
Occipital bone of the human skull, inner surface. It is situated at the back and base of the skull.…
Parietal bone of the human skull, inner surface. The parietal bones form the greater part of the sides…
Frontal bone of the human skull, outer surface. The frontal bone forms the forehead, roof of the orbital…
Temporal bone of the human skull. The temporal bones are situated at the sides and base of the skull.…
Sphenoid bone, situated the anterior part of the base of the skull, articulating with all the other…
Ethmoid bone, posterior surface. The ethmoid bone is an exceedingly light, spongy bone, placed between…
Lachrymal Bone. The lachrymal are the smallest and most fragile bones fo the face. They are situated…
Vomer bone, a single bone placed at the back part of the nasal cavity, and forms part of the septum…
Malar (cheek) bone. The malar bones form the prominence of the cheek, and part of the outer wall and…
Palate bone. Palate bones form the back part of the roof of the mouth; part of the floor and outer wall…
Inferior turbinated bone, convex surface. The inferior turbinated bones are situated on the outer wall…
Superior maxillary bone. With it's fellow on the opposite side, it forms the whole of the upper jaw.…
The hyoid, os hyoides, or tongue bone, is an isolated, U-shaped bone lying in front of the throat, just…
A cervical vertebra of the spine, inferior surface. Labels: 1, spinous process, slightly bifid; 4, transverse…
Side view of spinal column, without sacrum and coccyx. Labels: 1 to 7, cervical vertebrae; 8 to 19,…
Thorax. The thorax, or chest, is an elongated conical-shaped cage, formed by the sternum and costal…
Sternum, front and side view. The sternum, or breast bone, is a flat narrow bone, situated in the median…
The skull. Labels: a, nasal bone; b, superior maxillary; c, inferior maxillary; d, occipital; e, temporal;…
The skull at birth, superior suerface. The cranial bones of the infant at birth are not fullyformed…
Male pelvis (top) and female pelvis (bottom). The pelvis is stronger and more massively constructed…
A mixed articulation (slightly movable). In this form, the bony surfaces are usually joined together…
A toothed, or dentated suture. This is one type of immovable articulation. It is found in the union…
A simple complete joint, one type of movable articulation. The synovial membrane is represented by dotted…
"Diagram showing the progressive development of the skeletal tissues from the apex toward the base of…
A bony structure located at the bottom of the spine. The human sacrum forms the back part of the pelvis,…
An illustration of the skeletal fossil of Archaeopteryx, the earliest and most primitive bird known.…