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