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 Associated Bones of the Skull 2 Vertebral Column 3 Thoracic (Rib) Cage 4 Axial Skeleton 5 Skull 8 Cranial Bones & 14 Facial Bones Composed of the Skull, Associated Bones of the Skull, Vertebral Column, Thoracic (Rib) Cage Sternum & 24 Ribs 7 Cervical Vertebrae, 12 Thoracic Vertebrae, 5 Lumbar Vertebrae, Sacrum, Coccyx 6 Auditory Ossicles & Hyoid Bone 1 Orbital Cavities 2 Oral Cavity 3 Skull 4 Cavities 5 Sutures 6 Coronal Suture 7 Sagittal Suture 8 Palatine Suture 9 Nasal Cavity 10 Lambdoid Suture 11 Squamous Suture 12 Types of Sutures 13 Cranial Cavity Joint between parietal and occipital 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 eyes; Created by the frontal, sphenoid, ethmoid, zygomatic, maxilla, lacrimal, & palatine bones Joint between frontal and parietal bones Contains the brain; Created by frontal, parietal, temporal, occipital, ethmoid, & sphenoid bones Joint between parietal and temporal bones Joint between 2 parietal bones Joint between palatine bones Contains the nose; Created by the nasal, ethmoid, vomer, palatine, inferior nasal concha, & maxilla bones Contains the mouth; Created by the maxilla, palatine, & mandible bones Coronal, Sagittal, Squamous, Lambdoid, Palatine, Joints between the bones of the skull 1 Maxilla 2 Lacrimal 3 Occipital 4 Neurocranium 5 Frontal 6 Zygomatic 7 Temporal 8 Inferior Nasal Conchae 9 Ethmoid 10 Mandible 11 Nasal 12 Palatine 13 Face 14 Vomer 15 Sphenoid 16 Parietal 17 Anatomic Divisions of the Skull Nasal (2), Lacrimal (2), Zygomatic (2), Maxilla (2), Mandible (1), Vomer (1), Palatine (2), Inferior Nasal Conchae (2) Part of temple (lateral), part of base (inferior), back of eye Paired; Medial wall of the orbit Inferior nasal septum Medial wall of orbit, roof and superior-lateral walls of nasal cavity, and superior nasal septum Paired; top and sides (lateral) of head (lateral/superior cranial cavity) 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 Back of head and bottom of the skull (posterior/inferior cranium) Roof of nasal cavity Neurocranium and Face Lower jaw Paired; Upper jaw; Roof of oral cavity, floor and lateral walls of nasal cavity, and medial orbit Paired; Cheekbones (lateral orbit) Paired; Inferior-lateral walls of nasal cavity Forehead (anterior cranial cavity), eyebrows (roof of the orbit) Paired; Temple & ear (lateral), also base (inferior) 1 Associated Bones of the Skull 2 Stapes 3 Ear Ossicles 4 Hyoid 5 Bones of the Ear Ossicles 6 Malleus 7 Incus Stirrup Hammer Located within the temporal bone, amplify sound 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 Ear Ossicles & Hyoid Anvil 1 Cervical Vertebrae 2 Special Features of Cervical Vertebrae 3 Special Features of the Thoracic Vertebrae 4 Anatomic Divisions of the Vertebral Column 5 Coccyx 6 Thoracic Vertebrae 7 Parts of the Sacrum 8 Lumbar Vertebrae 9 Sacrum 10 Lordosis 11 Special Features of the Lumbar Vertebrae 12 Kyphosis Tailbone Vertebrae of the lower back Vertebrae of the Neck Small bodies Transverse foramina C2-C6 bifid spinous process C1 and C2 special! Very thick bodies Lock together with inwardly facing superior & inferior processes for max support Thick process for attachment of back muscles Leans anteriorly; Cervical and Lumbar Vertebrae Superior articular processes Auricular surfaces Sacral canal Sacral crest Sacral foramina Vertebrae of the thorax; Attached to the ribs Posterior pelvis Cervical Vertebrae (7), Thoracic Vertebrae (12), Lumbar Vertebrae (5), Sacrum, Coccyx Heart-shaped bodies Costal facets Long spinous processes Leans poteriorly; Sacrum & Thoracic Vertebrae 1 False Ribs 2 Sternum 3 Costochondral Joints 4 Sternocostal Joints 5 Floating Ribs 6 Xyphoid Process 7 Manubrium 8 True Ribs 9 Sternum Components 10 Body 11 Function of the Rib Cage 12 Ribs 13 Components of the Rib Cage protects enclosed organs, anchors many muscles 2; #'s 11 & 12; Have NO costal cartilage 3; #'s 8-10; Connect to #7's costal cartilage Manubrium, Body, Xyphoid Process Breastbone Between the costal cartilage and bone of the true (1-7) and false ribs (8-10) Cartilaginous Joints (Synchondroses) 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 Between the sternum and costal cartilage of true ribs (1-7) Synovial joints Bottom tab on the sternum 7; #'s 1-7; Each rib has its own costal cartilage 12 on each side; 3 types: true, false, & floating Sternum, Ribs, Costal Cartilage 1 Temporomandibular Joint 2 Axial Joints 3 Atlanto-occipital Joint 4 Sternocostal Joints 5 Vertebrocostal Joints 6 Atlanto-axial Joint 7 Intervertebral Joints T1-12 costal facets on vertebral body + head of rib T1-12 costal facets on transverse process + rib tubercle Superior + inferior articular processes Adjacent vertebral bodies (intervertebral disks) Temporomandibular, Atlanto-occipital, Atlanto-axial, Intervertebral, Vertebrocostal, & Sternocostal superior articular processes of atlas + occipital condyles atlas + dens of axis mandibular fossa + condylar process manubrium and sternal body costal notches + costal cartilage (1-7)