The Skeletal System Your Bones

2 Types of Bone 1.Intramembranous a. Develop from layers of connective tissue b. Osteoblasts- form bone tissue 2.Endochondral a.develop as hyaline cartilage that is later replaced by bone tissue b.long bone- continues to lengthen until epiphyseal plate are ossified

2 Divisions 1. Appendicular – pectoral girdle, upper limbs, pelvic girdle, and lower limbs. 2.Axial – skull, hyoid bone, vertebral column, and thoracic cage.

Vertebral column 7 cervical 12 thoracic 5 lumbar

Joint Movements Flexion/extension Dorsiflexion/plantar flexion Hyperextension Abduction/adduction Pronation/supination Eversion/inversion Elevation/depression Protraction/retraction Rotation Circumduction

Parts of a long bone Epiphysis (proximal and distal) –The ends of the bones –Epiphyseal plate = the growth plate Diaphysis –The shaft (middle) of the bone

Terms Used to Describe Skeletal Structures Condyle Crest Epicondyle Facet Fissure Fontanel Foramen Fossa Fovea Head Linea Meatus Process Ramus Sinus Spine Suture Trochanter Tubercle Tuberosity

Bones you need to be able to label Humorous Ulna Radius Carpals Metacarpals Phalanges Clavicle Scapula Sternum(manubrium, body, xiphoid process) Vertebrae(cervical, thoracic, lumbar, sacrum coccyx) Femur Patella Tibia Fibula Tarsals Metatarsals Calcaneous Frontal

Draw and Label (pg. 210 figure 7.19) Frontal Parietal Occipital Temporal Nasal Coronal suture Lambdoidal suture Maxilla Mandible Zygomatic Sphenoid Ethmoid Lacrimal Styloid Process