Relier Pairs Unit 2 Part 2: Axial SkeletonVersion en ligne Information on the axial portion of the skeleton and its features par Abigail Scott 1 Skull 2 Thoracic (Rib) Cage 3 Axial Skeleton 4 Vertebral Column 5 Associated Bones of the Skull Composed of the Skull, Associated Bones of the Skull, Vertebral Column, Thoracic (Rib) Cage 8 Cranial Bones & 14 Facial Bones Sternum & 24 Ribs 7 Cervical Vertebrae, 12 Thoracic Vertebrae, 5 Lumbar Vertebrae, Sacrum, Coccyx 6 Auditory Ossicles & Hyoid Bone 1 Squamous Suture 2 Sutures 3 Sagittal Suture 4 Oral Cavity 5 Cranial Cavity 6 Cavities 7 Palatine Suture 8 Nasal Cavity 9 Coronal Suture 10 Orbital Cavities 11 Skull 12 Types of Sutures 13 Lambdoid Suture Contains the eyes; Created by the frontal, sphenoid, ethmoid, zygomatic, maxilla, lacrimal, & palatine bones Contains 8 Cranial Bones, 14 Facial Bones, & Associated Bones: 6 Auditory Ossicles & Hyoid Bone A hollow space made by multiple bones; Cranial, Orbital, Nasal, & Oral Contains the nose; Created by the nasal, ethmoid, vomer, palatine, inferior nasal concha, & maxilla bones Joint between palatine bones Joint between frontal and parietal bones Contains the brain; Created by frontal, parietal, temporal, occipital, ethmoid, & sphenoid bones Joint between parietal and occipital bones Contains the mouth; Created by the maxilla, palatine, & mandible bones Coronal, Sagittal, Squamous, Lambdoid, Palatine, Joint between parietal and temporal bones Joint between 2 parietal bones Joints between the bones of the skull 1 Occipital 2 Neurocranium 3 Vomer 4 Lacrimal 5 Anatomic Divisions of the Skull 6 Mandible 7 Nasal 8 Parietal 9 Sphenoid 10 Zygomatic 11 Maxilla 12 Face 13 Temporal 14 Ethmoid 15 Inferior Nasal Conchae 16 Frontal 17 Palatine Back of head and bottom of the skull (posterior/inferior cranium) Neurocranium and Face Paired; Temple & ear (lateral), also base (inferior) Forehead (anterior cranial cavity), eyebrows (roof of the orbit) Inferior nasal septum Roof of nasal cavity Paired; Medial wall of the orbit Lower jaw Medial wall of orbit, roof and superior-lateral walls of nasal cavity, and superior nasal septum Paired; Upper jaw; Roof of oral cavity, floor and lateral walls of nasal cavity, and medial orbit Part of temple (lateral), part of base (inferior), back of eye Frontal (1), Parietal (2), Temporal (2), Occipital (1), Sphenoid (1), & Ethmoid (1) Paired; Posterior roof of oral cavity (hard palate), small part of lateral nasal cavity, and medial wall of orbit Paired; top and sides (lateral) of head (lateral/superior cranial cavity) Paired; Cheekbones (lateral orbit) Paired; Inferior-lateral walls of nasal cavity Nasal (2), Lacrimal (2), Zygomatic (2), Maxilla (2), Mandible (1), Vomer (1), Palatine (2), Inferior Nasal Conchae (2) 1 Bones of the Ear Ossicles 2 Associated Bones of the Skull 3 Malleus 4 Ear Ossicles 5 Stapes 6 Hyoid 7 Incus Located within the temporal bone, amplify sound Stirrup Malleus, Incus, Stapes Ear Ossicles & Hyoid Anvil slender, curved bone in the throat, does NOT articulate with any other bone – held in place by muscles & ligaments; Assists with swallowing Hammer 1 Anatomic Divisions of the Vertebral Column 2 Special Features of Cervical Vertebrae 3 Coccyx 4 Thoracic Vertebrae 5 Parts of the Sacrum 6 Lumbar Vertebrae 7 Special Features of the Thoracic Vertebrae 8 Lordosis 9 Special Features of the Lumbar Vertebrae 10 Sacrum 11 Cervical Vertebrae 12 Kyphosis Tailbone Very thick bodies Lock together with inwardly facing superior & inferior processes for max support Thick process for attachment of back muscles Small bodies Transverse foramina C2-C6 bifid spinous process C1 and C2 special! Vertebrae of the thorax; Attached to the ribs Posterior pelvis Leans anteriorly; Cervical and Lumbar Vertebrae Vertebrae of the lower back Leans poteriorly; Sacrum & Thoracic Vertebrae Heart-shaped bodies Costal facets Long spinous processes Superior articular processes Auricular surfaces Sacral canal Sacral crest Sacral foramina Vertebrae of the Neck Cervical Vertebrae (7), Thoracic Vertebrae (12), Lumbar Vertebrae (5), Sacrum, Coccyx 1 False Ribs 2 Body 3 Xyphoid Process 4 Sternum Components 5 Costochondral Joints 6 Sternum 7 Components of the Rib Cage 8 True Ribs 9 Floating Ribs 10 Function of the Rib Cage 11 Manubrium 12 Sternocostal Joints 13 Ribs protects enclosed organs, anchors many muscles 3; #'s 8-10; Connect to #7's costal cartilage 7; #'s 1-7; Each rib has its own costal cartilage 12 on each side; 3 types: true, false, & floating Bottom tab on the sternum Sternum, Ribs, Costal Cartilage Between the costal cartilage and bone of the true (1-7) and false ribs (8-10) Cartilaginous Joints (Synchondroses) Manubrium, Body, Xyphoid Process Suprasternal/jugular notch - Attachment point for sternocleidomastoid Clavicular notches - Sternoclavicular joints Costal notch - Sternocostal joints Majority of the sternum; 6 costal notches that create joints with costal cartilage and ribs 2; #'s 11 & 12; Have NO costal cartilage Between the sternum and costal cartilage of true ribs (1-7) Synovial joints Breastbone 1 Vertebrocostal Joints 2 Sternocostal Joints 3 Atlanto-occipital Joint 4 Intervertebral Joints 5 Atlanto-axial Joint 6 Temporomandibular Joint 7 Axial Joints atlas + dens of axis Superior + inferior articular processes Adjacent vertebral bodies (intervertebral disks) mandibular fossa + condylar process T1-12 costal facets on vertebral body + head of rib T1-12 costal facets on transverse process + rib tubercle superior articular processes of atlas + occipital condyles Temporomandibular, Atlanto-occipital, Atlanto-axial, Intervertebral, Vertebrocostal, & Sternocostal manubrium and sternal body costal notches + costal cartilage (1-7)
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