Hyoid bone.

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Presentation transcript:

Hyoid bone

Superior view

Vertebral column

B. REGIONS OF VERTEBRAL COLUMN Cervical (neck) - 7 vertebrae (C1-C7) Thoracic (chest) - 12 vertebrae (T1-T12) Lumbar (lower back) - 5 vertebrae (L1-L5) Sacral (pelvis) - 5 fused vertebrae (S1-S5) Coccygeal (tail) - 3-5 vertebrae (Co1-Co3) - Structure of vertebrae differ in different regions

VERTEBRAE GENERAL FEATURES

{ TYPICAL VERTEBRA BODY VERTEBRAL ARCH 1. BODY – anterior, solid transmits weight 2. VERTEBRAL ARCH – posterior, surrounds vertebral canal, spinal cord; consists of a) PEDICLES – project from body b) LAMINAE – unite to form arch posteriorly anterior Anterior BODY TRANSVERSE PROCESS-LATERAL { PEDICLE VERTEBRAL ARCH LAMINA SPINOUS PROCESS - POSTERIOR 3. TRANSVERSE AND SPINOUS PROCESSES - projections from arch for muscle, ligament attach

Cervical vertebrae

Typical cervical vertebra

Typical cervical vertebra

Atlas

Axis-vertebra CII (superior view)

Axis

Atlas and axis (anterolateral view)

Thoracic vertebrae

Lumbar vertebrae

sacrum

Pelvic surface

Dorsal surface of the sacrum

Ribs

sternum

Suprasternal notch Rib 1 Manubrium Rib 2 Sternal angle Costal cartilage Body of sternum Xiphoid process

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