H&P Crossword

123456789101112
Across
  1. 3. the junction of the occipital and temporal bones, allows passage of the jugular vein, the largest vein of the head, which drains the brain
  2. 7. a thin bridge of bone that joins with the cheekbone (zygomatic bone) anteriorly
  3. 8. a rough projection posterior and inferior to the external acoustic meatus; it provides an attachment site for some muscles of the neck.
  4. 9. Tiny canals, canaliculi, radiate outward from the central canals to all lacunae; the canaliculi form a transportation system that connects all the bone cells to the nutrient supply through the hard bone matrix.
  5. 10. The lacunae are arranged in concentric circles called lamellae around central (Haversian) canals.
  6. 12. The diaphysis, or shaft, makes up most of the bone’s length and is composed of compact bone; it is covered and protected by a fibrous connective tissue membrane, the periosteum.
Down
  1. 1. The external acoustic meatus is a canal that leads to the eardrum and middle ear; it is the route by which sound enters the ear.
  2. 2. Each complex consisting of central canals and matrix rings is called an osteon, or Haversian system.
  3. 4. The two maxillae, or maxillary bones, fuse to form the upper jaw; all facial bones except the mandible join the maxillae
  4. 5. The mature bone cells, osteocytes, are found within the matrix in tiny cavities called lacunae.
  5. 6. The styloid process, a sharp, needlelike projection, is just inferior to the external auditory meatus.
  6. 11. The mandible, or lower jaw, is the largest and strongest bone of the face