Term
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Definition
| Frontal, Parietal (2), Temperal (2), Occiput, Ethmoid, Splenoid TG: p228 |
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Term
| The Temporal Fossa is known as "The Four Corners." It is the intersection of the following 4 Cranial bones: |
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Definition
Frontal, Parietal, Sphenoid & Temporal
TG p 229 |
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Term
| What muscle origininates on the Temporal Fossa? |
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Definition
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Term
| Although there are 14 Facial Bones, what are the 3 we are focusing on? |
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Definition
Maxilla, Mandible and Zygomatic
TG p229 |
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Term
| What are the three important landmarks on the Mandible? |
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Definition
Ange, Ramus and Angle
TG p 230 |
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Term
| What Exocrine Gland is in the area where the Mandible and Maxilla articulate? |
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Definition
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Term
Temporalis Muscle
Origin:
Insertion:
Action: |
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Definition
Origin: Temporal Fossa (intersection of 4 Cranial Bones: Temporal, Parietal, Frontal and Sphenoid.)
Insertion: Coronoid process of the Mandible (Crown Line.)
Action: Elevation and Retraction of Mandible
TG p 251 |
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Term
| Description of the Coronoid Process of the Mandible |
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Definition
When you place your fingers on the TM, temporomandibular joint, and OPEN your mouth, the CORONOID "pops" out.
It is the insertion of the Temporalis Muscle.
TG p 235 |
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Term
| What landmark on the Zygomatic Bone is of importance at this poont? |
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Definition
Zygomatic arch.
It is the origin of the Masseter muscle.
TG p 230 |
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Term
| What does the word, "Masseter" mean? |
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Definition
| "To chew." This is how the muscle is named. |
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Term
Masseter Muscle
Origin:
Insertion:
Action: |
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Definition
Origin: Zygomatic arch
Insertion: Angle and Ramus of the Mandible
Action: Elevation of the mandible (closing the open mouth.)
TG p 250 |
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Term
| what does the word 'ramus' mean? |
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Definition
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Term
| Fact: When both attachments of a muscle are on the axial skeleton, the INFERIOR attachment is the origin. The origin is usually fixed and not moveable. The SUPERIOR attachment is insertion. The insertion is the movemable attachment. Most of the time, the insertion moves toward the origin. |
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Definition
EXCEPTION: The Temporalis and Masseter are exceptions. Both attachments are on the Axial skeleton. HOWEVER, on both muscles, the SUPERIOR attachments are the origins, the non-moveable parts. And, the INFERIOR attachments are the insertions, the movemable parts.
The insertion still moves toward the origin. |
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Term
| What is a unique characteristic of the Temporalis? |
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Definition
| It travels underneath the arch of the zygomatic bone on its way to attach onto the coronoid process of the mandible. |
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