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Anat1 Axial Skeleton
(Week 1)
| Question | Answer |
|---|---|
| What are the three regions of the axial skeleton? | Skull, Vertebral Column, Bony Thorax |
| The skull is formed by the __________ and _________ bones. | cranium, facial |
| How many cranial bones are there? | 8 |
| What are the cranial bones? | 2 parietal, 2 temporal, frontal, occipital, sphenoid, ethmoid |
| The articulation between the parietal bones and frontal bone anteriorly is the: | coronal suture |
| Where right and left parietal bones meet superiorly is the: | sagittal suture |
| Where parietal bones meet the occipital bone posteriorly is the: | lambdoid suture |
| Where parietal and temporal bones meet is the: | squamosal or squamous suture |
| What are the four major regions of the temporal bones? | Squamous, Tympanic, Mastoid, Petrous |
| The _________ bones form most of the superior and lateral aspects of the skull. | parietal |
| The _________ bones form the inferiolateral aspects of the skull and parts of the cranial floor. | temporal |
| The _________ bone forms most of the skull's posterior wall and base. | occipital |
| The _________ bone is a butterfly shaped bone that spans the width of the middle cranial fossa and articulates with all other cranial bones. | sphenoid |
| The _________ bone forms the anterior portion of the cranium. | frontal |
| The _________ bone forms most of the bony area between the nasal cavity and the orbits. | ethmoid |
| The _________ bones are tiny irregularly shaped bones that appear within sutures. AKA sutural bones. | wormian |
| There are ____ facial bones. | 14 |
| Only the ______ and ______ are unpaired facial bones. | mandible, vomer |
| The _______ is the largest, strongest bone of the face. | mandible |
| The names of the paired facial bones are: | maxillae, zygomatics, nasals, lacrimals, palatines, inferior conchae |
| The _________ bones are irregularly shaped bones that form the prominences of the cheeks and the inferolateral margins of the orbits. | zygomatic |
| The ________ is a plow-shaped bone that forms part of the nasal septum. | vomer |
| The _______ bones are thin medially fused bones that from the bridge of the nose. | nasal |
| The _______ bones contribute to the medial walls of the orbit and contain a deep groove called the _______ fossa that houses the ________ sac. | lacrimal |
| The _______ bones are two bone plates that form portions of the hard palate, the posterolateral walls of the nasal cavity, and a small part of the orbits. | palatine |
| The _______ _______ _______ are paired, curved bones in the nasal cavity that form part of the lateral walls of the nasal cavity. | inferior nasal conchae |
| The _______ _______ are mucosa-lined, air-filled sacs found in five skull bones -- the frontal, sphenoid, ethmoid, and paired maxillary bones. | paranasal sinuses |
| The four pairs of muscles involved in mastication are: | Masseter, Temporalis, Internal/Medial pterygoid, External/Lateral pterygoid |
| Masseter OIA | O: zygomatic arch and maxilla I: angle and ramus of mandible A: prime mover of jaw closure, elevates mandible |
| Temporalis OIA | O: temporal fossa I: coronoid process of mandible A: prime mover of jaw closure, elevates and retracts mandible |
| The ________ ________ is composed of the thoracic vertebrae dorsally, the ribs laterally, and the sternum and costal cartilages anteriorly. | Thoracic Cage/ Bony Thorax |
| The _________ is a dagger-shaped flat bone that lies in the anterior midline of the thorax. | sternum (breastbone) |
| How many pairs of ribs are there? | 12 |
| How many cervical vertebrae are there? | 7 |
| The most mobile part of the spine is the _________ vertebrae. | cervical |
| The _________ bone is the only bone that does not articulate with another bone. It is found in the neck. | Hyoid |
| How many thoracic vertebrae are there? | 12 |
| How many lumbar vertebrae are there? | 5 |
| How many sacrum vertebrae are there? | 5 |
| How many coccyx vertebrae are there? | 4-5 |
| The three parts of the sternum are: | manubrium, body, xiphoid process |
Created by:
sdouglass
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