. Text-book of anatomy and physiology for nurses. nsion. . Elbow, Knee. Ball and socket (Enar- throsis). In all directions Shoulder, Hip. Pivot (Trochoides) Rotation within a . Head of Radius. Rotation of ring around a pivot. Atlas and axis. Arthrodia Gliding Carpal joints. There are other joints in which motion is so slight that they arenot classed as movable, nor do they possess a cavity containingsynovia. They have been well described by the term these the bones are usually connected by fibro-cartflage are found in the joints of the pelvis (page 46) and in
. Text-book of anatomy and physiology for nurses. nsion. . Elbow, Knee. Ball and socket (Enar- throsis). In all directions Shoulder, Hip. Pivot (Trochoides) Rotation within a . Head of Radius. Rotation of ring around a pivot. Atlas and axis. Arthrodia Gliding Carpal joints. There are other joints in which motion is so slight that they arenot classed as movable, nor do they possess a cavity containingsynovia. They have been well described by the term these the bones are usually connected by fibro-cartflage are found in the joints of the pelvis (page 46) and in thespinal column (page 38). CHAPTER AND ARTICULATIONS OF THE SKULL. The skull includes the cranium and face. BONES OF THE CRANIUM, 8. Frontal i Occipital I Temporal 2 Parietal 2 Ethmoid i Sphenoid i Frontal bone {os frontale).—In the anterior part of the skull,shaped like a cockle-shell, and consisting of the frontal part, orforehead, the two orbital parts, and the nasal part. The frontal GLABELLA, ANTERIOR NASALSPINE PROSTHIO. Fig. II.—The Skull.—(Gerrish.) part {squama frontalis) is flat in structure, and unites above withthe parietal bones. This part is bounded below by a prominentborder forming the two supraorbital margins. At the medial 16 BONES OF THE CRANIUM. 17 third of each margin is a supraorbital notch (sometimes foramen)for the supraorbital nerve, artery, and vein. Just above the marginsare the superciliary arches, which bear the eyebrows and mark theposition of spaces in the frontal bone called the fro^ital sinuses begin to develop at the age of seven years and growlarger as time advances. They communicate with the nose, andcontain air. The smooth space between the eyebrows is the glabella. The nasal part is just below the glabella. The orbital parts (or plates) of the frontal bone are so calledbecause they are in the roof of the orbits, or eye-sockets; the spacebetween these parts is occupiedby the ethmoid bone and iscalled the ethmoid
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