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The Vertebral Column 9 vertebrae fuse to form 2 composite bones Sacrum Coccyx
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Skull video https://www.youtube.com/watch?
v=Nc5IRj3OJhE&list=PL6098E914B07DED08
The Vertebral Column 24 single vertebral bones separated by intervertebral discs
7 cervical vertebrae in neck 12 thoracic vertebrae in chest region 5 lumbar vertebrae in lower back
The Vertebral Column 9 vertebrae fuse to form 2 composite bones
Sacrum Coccyx
Intervertebral Discs Pads of flexible fibrocartilage
What happens as you age?
The Vertebral Column
The Vertebral Column Primary curvatures of the
thoracic and sacral regions
Present from birth
Secondary curvatures of the cervical and lumbar regions
Develop after birth
The Vertebral Column
The Vertebral Column
A Typical Vertebrae, Superior View
• Atlas (C1) has no body
• Large depressions for skull to rest on
• “YES”
• Axis (C2) as pivot to rotate axis
• Upright process called Dens
• “NO”
C3-C7• Small
• Light
• Anteater
T1-T12• Ribs
• Body shapedlike heat
• Giraffe
L1-L5• Bodies big
and block like
• Sturdy
• Moose
Vertebral Column What is the major function of the vertebral column?
Vertebral Column Protection of spinal cord
Attachment of muscles (pelvic, pectoral girdles)
Balance body weight when walking and standing
The Bony Thorax Consists of three parts
Sternum Ribs
True ribs (pairs 1–7) False ribs (pairs 8–12) Floating ribs (pairs 11–12)
Thoracic vertebrae(T1-T12)
The Appendicular Skeleton
Pectoral Girdle (Shoulder) Clavicle—collarbone
Scapula—shoulder blade
Allow for exceptional free movement
Pectoral Girdle (Shoulder)
Pectoral Girdle (Shoulder)
Upper Limbs
Humerus
Forms the arm Single bone
Upper Limbs
Forearm (2 bones)
Ulna
Radius
Hands
Carpals (wrist) Metacarpals (palm) Phalanges (fingers)
Bones of the Pelvic Girdle Formed by two coxal (ossa coxae) bones
Composed of three pairs of fused bones Ilium Ischium Pubis
Total weight of body rests here
Bones of the Pelvic Girdle
Bones of the Pelvic Girdle
Gender differences