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Anat1 Axial Skeleton

(Week 1)

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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