Vocabulary Thoracic cage Ribs Sternum Pectoral girdle Clavicles

Vocabulary • • • Thoracic cage Ribs Sternum Pectoral girdle Clavicles Scapulae • • Vertebrae Invertebral discs Cervical vertebrae Thoracic vertebrae • Lumbar vertebrae • Sacrum • Coccyx 1

The Vertebral Column • The backbone or spine • Consists of ___ bones called _______

The Vertebral Column · Vertebrae separated by intervertebral discs (act as shock absorbers) · The spine has a normal curvature · Each vertebrae is given a name according to its location Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 5. 14 Slide 5. 28

Vertebral column • C 1 -C 7 ~ in the neck region – 7 cervical vertebrae • T 1 -T 12 ~ located in the chest region – 12 thoracic vertebrae • L 1 -L 5 ~ located in the lower back – 5 lumbar vertebrae

Vertebral column • Sacrum ~ curved bone of the lower back (posterior wall of the pelvis) • fused sacral vertebrae – 5 vertebrae at birth • Coccyx ~ the tailbone – 4 vertebrae at birth

Vertebral Column • The vertebrae become larger as the vertebral column descends…. . WHY? • Vertebral _______ ~ opening for spinal cord. • What is the opening for the spinal cord in the skull called?

Vertebral Column • 180 bones - 26 vertebral column bones = 154 bones to go!

Spine or Vertebral column | Spine bones joints | Human Spine Anatomy 3 D animation | Elearnin Video • https: //www. youtube. com/watch? v=178 Xn TK 5 u. Hk 8

The Bony Thorax (Thoracic Cage) · The chest region · Forms a cage to protect major organs · Composed of ______, ____ and thoracic vertebrae. Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 5. 19 a Slide

Thoracic Cage • ____ ~ breastbone. • Dagger-shaped bone located along the midline of the anterior chest.

Thoracic Cage • Ribs ~ 12 pairs of ribs attach posteriorly to the thoracic vertebrae • _____ ribs ~ first 7 pair • _____ ribs ~ next to last 5 pairs • Floating ribs- last 2 pairs

Rib Cage Anatomy - Bones of the Thoracic Wall (Costae) Video • https: //www. youtube. com/watch? v=3 Ilb. LT MNer 8 12

That is it for the axial skeleton! • 154 bones - 24 ribs -1 sternum = 129 bones to go!!!

The Pectoral (Shoulder) Girdle · Composed of two bones · _______ – collarbone · _______ – shoulder blade · These bones allow the upper limb to have exceptionally free movement Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Slide 5. 33

Bones of the Shoulder Girdle Figure 5. 20 a, b Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Slide

Scapula and Clavicle - Shoulder Girdle Anatomy Tutorial • https: //www. youtube. com/watch? v=5 bneyl G 3 w 10 16