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