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35 Cards in this Set
- Front
- Back
How many Cranial bones are there?
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8
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How many Facial bones are there?
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14, (however, some textbooks include the hyoid as a facial bone which make it 15).
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The cranial bone forms the forepart (front) of the cranial vault, the roof of the eye sockets, and a small portion of the nasal cavity.
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Frontal Bone
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This bone is located between the occipital and frontal bones and forms the largest portion of the top and sides of the cranium.
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Parietal Bone
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This bone forms a portion of the right and left sides of the skull (Cranium) below the parietal bones and the main point of origin for the temporal muscle.
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Temporal Bone
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This bone has two sets of wings and looks like a bat with it's wings extended. Located in the middle of the base of the skull and site of the attachment for the sphenomandibular ligament.
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Sphenoid Bone
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Paired bones which unite at the midline to give shape to the midline of the face and consist of a body and 4 processes.
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Maxilla
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This process forms a portion of the lateral wall of the nose.
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Nasal Process (Frontal)
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This process joins with the zygoma and the zygomatic process of the temporal bone to form the zygomatic arch (cheek bone).
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Zygomatic Process
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Surrounds roots of the maxillary teeth.
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Alvolar Process
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Forms the anterior 2/3 of the hard palate.
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Palatine Process
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This bone makes up the posterior 1/3 of the hard palate.
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Palatine Bone
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U-shaped bone located anterior to the spinal column between the mandible and the larnyx.
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Hyoid
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This, otherwise known as the lower jaw is the only movable bone of the skull.
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Mandible
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Curved, somewhat like a horseshoe.
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Body of the Mandible
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A vertical projection at the posterior of the body.
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Ramus of the Mandible
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Angle of the mandible is where the body and ramus meet.
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Angle of the Mandible.
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The body of the mandible which surrounds the root structure of individual teeth.
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Alveolar Process of the Mandible
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The anterior process at the end of each Ramus.
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Coronoid Process of the Mandible
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The posterior process at the end of each Ramus.
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Condyloid Process of the Mandible
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The "U" shape conavity between the Condyloid and the Coronoid process.
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Mandibular Notch of the Mandible
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Joints that are highly irregular, jigsaw puzzle-like lines called sutures. Movement does occur but is very limited.
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Synarthrosis or Immovable joints
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Joints that are freely movable, gliding, hinge
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Ginglymodiarthrodial or Gliding Joint
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This type of joint existing between the occipital bone of the skull and the first vertebrae of the spinal column. There are two axes of motion. Allows you to nod your head and rotate it from side to side.
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Ellipsodial Joint
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An area where a muscle attaches and moves the least when it contracts.
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Origin
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An area where a muscle attaches that has the greatest movement during contrction.
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Insertion
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The perfmance expected when a particular muscle contracts.
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Action
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This is the most powerful muscle of mastication. Origin- Zygomatic arc, Insertion- lateral surface of the ramus, Action- Closing of the mandible with a hinge type closure.
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Masseter
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Origin- Side of the skull (Broad, fan shaped), Insertion point- Coronoid process of the mandible, Action- Help retrude the jaw and close the manible.
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Temporal (Temporalis)
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Origin- Palatine bone and the pterygoid process of the sphenoid bone. Insertion Point- The internal surface of the ramus of the mandible. Action- The medial pterygoid acts with the masseter and the temporal to close the mandible.
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Medial Pterygoid
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Origin- Pterygoid Process and the greater wing of the sphenoid bone. Insertion Point- is the neck of the condyloid process of the mandilbe. Action- Combination Side to Side and Protrusion.
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Lateral Pterygoid
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The right and left mylohyoid muscles join in the midline to form the floor of the mouth.
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Mylohyoid Depressor of the Mandble
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Located next to each side of the midline directly on top of the mylohyoid muscles.
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Geniohyoid Depressor of the Mandible.
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This muscle pulls the mandible downward and backward and runs under the mylohyoid muscles.
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Digastric Depressor of the Mandible
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Depressors of the Mandible
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Mylohyoid, Geniohyoid and Digastric.
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