Lab 2 PPT - Axial Skeleton.pptx

BIOL117: Human Anatomy & Physiology I for the Health Sciences Axial Skeleton Frontal Bone Temporal Bone Temporal Bone – Mastoid Process Parietal Bone Temporal Bone – External Auditory Meatus Occipital Bone Occipital Bone – Foramen Magnum Sphenoid Ethmoid Vomer Nasal Bone...

BIOL117: Human Anatomy & Physiology I for the Health Sciences Axial Skeleton Frontal Bone Temporal Bone Temporal Bone – Mastoid Process Parietal Bone Temporal Bone – External Auditory Meatus Occipital Bone Occipital Bone – Foramen Magnum Sphenoid Ethmoid Vomer Nasal Bone Maxilla Mandible Mandible - Ramus Lacrimal Palatine Bone Zygomatic Bone Orbit = Eye Socket Hyoid Study Slide Study Slide Study Slide Review 1. What is the anatomical name for the jawbone? a. Maxilla b. Mandible c. Hyoid d. Zygomatic 2. What is the name of the forehead bone? a. Parietal b. Temporal c. Frontal d. Occipital 3. What is the name given to the eye socket? a.Palatine b.Orbit c.Maxilla d.Ethmoid 5 min break  Vertebral Column Cervical -C1-C7 Atlas (C1) Axis (C2) Thoracic- T1-T12 Lumbar- L1- L5 Sacral- S1-S5 Coccyx- 3 Vertebral Posterior Column Lateral Anterior Atlas – C1 Smooth surfaces for the skull to rotate, groove for dens (C2) Axis – C2 Dens/Odontoid Process Vertebral Body Vertebral Foramen Cervical Thoracic Lumbar Spinous Processes Spinous Processes Cervical Thoracic Lumbar Transverse Processes Cervical Thoracic Lumbar Lamina Between spinous process and transverse processes Cervical Thoracic Lumbar Pedicle Between body and Lamina Cervical Thoracic Lumbar Vertebral Arch Superior & Inferior Articular Facets Inferior Articular Facet Articulate (connect) with the vertebrae above and below If we are talking about L5… The superior articular facet of L5 will articulate with the inferior process of L4. The inferior process of L5 will Superior Articular Facet articulate with S1 Superior & Inferior Articular Facets How they articulate Study Slide Vertebral Column Sacrum & Coccyx Comparing the vertebrae Cervical Smaller, delicate bones support the weight of the head Flexible to allow a wide range of head movement Transverse foramen present The atlas (C1) is the only vertebra with no vertebral body Thoracic Larger bones than in the cervical region Has extra articulations for rib attachment Has long, downwardly pointed (“elephant trunk”) spinous processes Lumbar Largest bones in the spine, large vertebral bodies Support most of the weight of the upper body Vertebral Column *Be able to distinguish between the different vertebrae: -Cervical -Thoracic -Lumbar Think about differences between… -Bodies -Spinous Processes -Unique characteristics (rib facets on thoracic, transverse foramen on cervical, etc)  Vertebral Column- Intervertebral Disc Nucleus Pulposus Inner portion Shock absorber “Jelly like” Annulus Fibrosis Outer portion Keeps nucleus pulposus contained Distributes pressure evenly across the vertebrae Ribs and Sternum Types of Ribs True ribs (7) False ribs (3) Floating ribs (2) Thoracic Cage- Costal Cartilage True Ribs 7 Ribs Have their own costal cartilage attachment False & Floating Ribs False Ribs-3 Share costal cartilage attachment Floating Ribs-2 No attachment to the sternum  Floating Ribs Floating Ribs-2 No attachment to the sternum Sternum Sternum- Jugular Notch Sternum- Manubrium Sternum- Body Sternum- Xiphoid Process Review 1. What is the anatomical name for the C1 vertebrae? a. Sternum b. Atlas c. Hyoid d. Axis 2. What is the name of the inner jelly of intervertebral discs? a. Nucleus pulposus b. Annulus Fibrosis c. Lumbar d. Occipital 3. How many thoracic vertebrae are there in the spine? a.3 b.12 c.10 d.7