Biology 223 Human Anatomy and Physiology Week 3; Lecture 1; Wednesday Dr. Stuart S. Sumida The Axial Skeleton.

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Presentation transcript:

Biology 223 Human Anatomy and Physiology Week 3; Lecture 1; Wednesday Dr. Stuart S. Sumida The Axial Skeleton

Axial Skeleton Development of the skeleton

Structural features of the vertebrae: Centrum Neural arch Transverse processes Spinous process Zygapophyses

Cervical verterbrae: Transverse foramen Vertebral artery

Atlas and Axis Vertebrae

Thoracic vertebrae

Lumbar vertebrae

4 Distinct Curvatures of the Vertebral Column

Characteristic number of vertebrae in each region Segmental spinal nerves Number system for the spinal nerves (See pages of your lab manual.)

Ribs – Know: Difference between "true ribs," "false ribs," and "floating ribs.“ Body or shaft Head of the rib Tubercle

Sternum Body Manubrium Xiphoid process

Functions of the Axial Skeleton Support Protection Respiration