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What two parts is the skeleton divided into?
- 1. Axial skeleton
- 2. Appendicular skeleton
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What is included in the axial skeleton?
- Skull bones
- Ear bones
- Hyoid bone
- Ribs
- Sternum
- Bones of the vertebral column
- *All bones that lay along the axis of the body
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What is included in the appendicular skeleton?
- Arms
- Legs
- Clavicle
- Scapula
- Pelvis, Hip, Coxal bones
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What two sets of bones does the skull contain?
- 1. Cranial bones (8) form the cranium
- 2. Facial bones (14) form the face
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How are bones defined as belonging to the cranium or not?
Any bone that comes into contact with the fluid surrounding the brain is the cranium.
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What is the name for the connection between two bones that are immovable?
Suture
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Names (and how many) of cranial bones
- Parietal (2)
- Ethmoid
- Sphenoid
- Temporal (2)
- Occipital
- Frontal
(PEST OF 6)
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Frontal bone
forms the forehead, roofs of orbits, and most of anterior cranial floor
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Coronal suture
- Joint between temporal bone and each of the temporal bones.
- A single suture, where the temporal bone touches the temporal bones.
- (Remember coronal means frontal--this suture sits in the frontal plane)
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Parietal Bones
- Two large, four-sided bones that form the greater portion of the sides and roof of the cranial cavity.
- Each of the parietal bones articulates with five other bones.
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Temporal Bones
Two bones. Form your temples (region of the cranium around your ear)
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Occipital bone
- Back of the head.
- Forms posterior part, and most of the base of, the cranium
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Foramen Mangnum
Large opening in the occipital bone at the base.
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Occipital condyles
2 oval processes, one on either side of the foramen magnum
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