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Cranial Anatomy 4
Cranium Anatomy part 4 (RAD 125)
| Question | Answer |
|---|---|
| What provides protective housing for upper respiratory and digestive tracts? | Facial Bones |
| What is the largest and densest bone of the face? | Mandible |
| Superior border of body (of mandible); supports roots of teeth | Alveolar Portion |
| What is the only view where you can see all of the sinus of the skull? | Lateral |
| The Condylar process of the mandible articulates with the Mandibular Fossa of Temporal bone to form the | Temporomandibular Joint (TMJ) |
| What is the largest immovable bones of face? | Maxilla |
| Forms the roof of the mouth | Hard Palate |
| The two smallest bones in the skull | Lacrimal Bones |
| Two L-shaped bones composed of vertical and horizontal plates Forms part of the hard Palate | Palatine Bones |
| Long, narrow, very thin bones with a lateral curl. Gives scroll-like appearance | Inferior Nasal Conchae |
| What forms the inferior nasal septum | Vomer |
| Small U-shaped bone situated at the base of the tongue Accessory bone of axial skeleton – not a facial or cranial bone | Hyoid Bone |
| The Hyoid Bone only bone in the body that | does not articulate with another bone |
| Defined as the air-filled cavities located in the frontal, ethmoid, and sphenoid bones of the cranium, as well as the maxillae of the face | Paranasal Sinuses |
| Largest and most symmetric Paired (one in each facial bone) Vary in size and shape, but are approximately pyramidal in shape | Maxillary Sinuses |
| Second largest, paired Located between vertical plates of frontal bone Vary greatly in size and shape Occasionally absent Rarely symmetric | Frontal Sinuses |
| Normally paired Occupy body of sphenoid bone Often only one sinus develops, but never more than two Vary in size and shape, Usually asymmetric Located below sella turcica and extend between dorsum sellae and posterior ethmoid air cells | Sphenoid Sinuses |
| Located within lateral masses of labyrinths Composed of varying number of air cells, which are divided into three main groups Anterior (2 to 8) Middle (2 to 8) Posterior (2 to 6) | Ethmoid Sinuses |
| The Maxilla forms | Part of the floor of the orbit |
| The Zygomatic Bones form | Part of the side wall and floor of the orbits |
| The Lacrimal Bones form | The anterior part of the medial wall of the orbits |
| What forms the superior bony wall of the nasal cavity? | Nasal Bones |
| 2 nasal and frontal bone articulate to form the | Nasion |
| The very top of the _________ forms part of the orbit | Palatine Bone |
| What are the only facial bones that DO NOT come in pairs? | Mandible & Vomer |
| There are ____ Bones in the orbit | 7 |
| The Nasal Bones are commonly referred to as the | Bridge of the Nose |
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