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2.3 Bones in head
Bones and structures located in your head.
| Question | Answer |
|---|---|
| Bones are...? | dense connective tissue composed of mainly calcium and phosphate |
| How many bones are in the body? | 206 |
| List the functions of bones: (6 in total) | Protection, support, surfaces for muscle/ligament/tendon attachment, movement, production of RBCs, and the storage of 99% of the calcium in the body. |
| Axial skeleton includes: | 80 bones from the head and torso (including the 6 from the middle ear) |
| Appendicular skeleton includes: | 126 bones from the body's extremities. |
| The skull contains: | 28 bones |
| Mandible | only moveable bone of the skull |
| Sutures | Immobile joints that hold the skull together |
| Coronal suture holds together what? | divides and holds together the frontal bone from the parietal bone. |
| Lambdoid suture holds together what? | holds the parietal bones to the occipital bone. |
| Sinuses | air-filled spaces within the skull that decrease the weight of bones, moisten incoming air, and resonate voice. |
| What is the foramen magnum? | large opening at the base of the skull that lets the spinal cord through. |
| What do the maxillary bones form? | upper jaw, the nose, the orbits (eye sockets), the roof of the mouth, and the maxillary sinuses. |
| The zygomatic is also know as the? | cheek bones |
| The nasal bones form the? | upper part of the nose. |
| The mandible forms the? | lower jaw. |
| At what age does the anterior fontanel close? | 10-18 months |
| At what age does the posterior fontanel close? | by the age of 2 months |
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FMHSAHS102
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