The skeleton of the head or skull (diagram 23.24) has a cerebral and facial parts. Unlike animals, human brain prevails over much of the face. The sk

Skull [Head skeleton]

The skeleton of the head or skull (diagram 23.24) has a cerebral and facial parts. Unlike animals, human brain prevails over much of the face. The skull bones of an adult are interconnected stock-still using sutures (diagram 22a). A newborn child does not have these sutures, his skull bones have a certain mobility (fontanelles helps with this), that is very important at the time of birth (diagram 22b).

The brain part contains the brain, the organs of hearing and balance. It consists of such bones (diagram 24): paired parietal and temporal (the latter has a dormer hole) and unpaired — frontal and occipital. There is the foramen magnum on the bottom of the latter (diagram 23) through which the cranial cavity is connected with spinal canal.

The facial part of skull (diagrams 23, 24) has 15 bones, the largest of which are paired maxillary, zygomatic and unpaired mandibular — the only movable bone of the skull. The jaw bones have recesses where the roots of the teeth are placed. The upper part of the facial skull has eye sockets — orbits. Taken from http://worldofschool.org

Diagram 22. Connection of the skull bones: a) a fixed connection of the skull bones — joints (1) (top view); b) soft, movable bones of the compound (2) and the parietal fontanelle (3) of the newborn baby
Diagram 23. Human Skull: 1 — the facial part; 2 — the brain part; 3 — the foramen magnum; 4 — the teeth of the upper jaw
Diagram 24. Skull bones: 1 — frontal; 2 — parietal; 3 — occipital; 4 — temporal; 5 — malar; 6 — bow; 7 — maxillary; 8 — mandibular; 9 — auditory opening; 10 — orbit
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Questions:
  • Identify the relationship of the head skeleton structure and functions.