TOONLANAT THUANTHONG THE SKELETAL SYSTEM. Functions of The Skeletal system Support body weight Enable movement Protect vital organs Point of attachment.

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Presentation transcript:

TOONLANAT THUANTHONG THE SKELETAL SYSTEM

Functions of The Skeletal system Support body weight Enable movement Protect vital organs Point of attachment for muscles Storage of minerals

Bones Classifications By region Axial Skeleton Skull Vertebrae Ribs Sternum Appendicular Skeleton Upper extremities Lower extremities

Bones Classifications By shape

Harversian system Compact bone

Bone marrow Red bone marrow Yellow bone marrow – Fat cell

Microscopic Structure of Bone

Bone development or growth Intramembranous ossification –formation of cranial bones of the skull and the clavicles –An ossification center appears –Bone matrix is secreted within the fibrous membrane

Bone development or growth Endochondral ossification –Uses hyaline cartilage “bones” as models for bone construction –Formation begins at the primary ossification center

Bone repair

SKULL Frontal Mandible

Parietal Temporal Frontal Occipital Mandible

Occipital Parietal Temporal

Occipital

Fontanelle -Anterior fontanelle จะปิดสนิท เมื่ออายุ เดือน -Posterior fontanelle ปิดเมื่อ อายุประมาณ 2 เดือน

Vertebral Column 7 Cervical 12 Thoracic 5 Lumbar 1 Sacrum 1 Coccyx

Sacrum

Sternum

Ribs True ribs - 1 st - 7 th ribs False ribs - 8 th - 10 th ribs Floating ribs - 11 th - 12 th ribs

Scapula

Humerus Ulna Radius

Carpal bone

Pelvis symphysis Pubis

Sex Determination

Femur Tibia Fibula

Patella

joints Classification of joints – Fibrous joints Suture Syndesmosis – Cartilaginous joints Synchondrosis Symphysis – Synovial joints Gliding joint Hinge joint Pivot joint Ellipsoidal joint/ condylar joint

Fibrous joints

Cartilaginous joints

Synovial joints

Humerus

Scapula

Foramen magnum

Mandible

Frontal bone

Carpal bone Metacarpal bone

Sacrum

Clavicle