Anatomy 2 PDF

The Human Skeleton A- The axial skeleton Human skeleton The human skeleton : The human skeleton is made up of 206 bones. The func ons of the skeleton are to provide support, give our bodies shape, provide protec on to other systems and organs of the body, to provide a achments for muscles, to produc...

The Human Skeleton A- The axial skeleton Human skeleton The human skeleton : The human skeleton is made up of 206 bones. The func ons of the skeleton are to provide support, give our bodies shape, provide protec on to other systems and organs of the body, to provide a achments for muscles, to produce movement and to produce red blood cells. ti tt ti Dr. Ali Mohammed Human skeleton Axial skeleton - forms long axis of body Skull Vertebral column Thoracic cage Appendicular skeleton (next week) - appendages and what they a ach to Upper limbs (arms) Pectoral girdle (shoulder) Lower limbs (legs) Pelvic girdle tt Dr. Ali Mohammed Human skeleton Axial skeleton : Skull Vertebral column Thoracic cage Dr. Ali Mohammed Human skeleton The skull = cranial bones and facial bones Cranial bones (or cranium) Frontal bone Parietal bones (paired) Occipital bone Temporal bones (paired) Sphenoid bone Ethmoid bone Facial bones Mandible Vomer Maxillae (paired) Zygoma cs (paired) Nasal (paired) Lacrimal (paired) Pala nes (paired) Inferior nasal conchae (paired) ti ti Dr. Ali Mohammed Human skeleton Cranial bones : Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Sutures : Largest 4 skull sutures: where bones ar culate with parietal bones Coronal Sagi al Squamous Lambdoid ti tt Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Paranasal sinuses : Air-filled sacs in the bones "Paranasal" because they cluster around and connect to the nasal cavity Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Hyoid bone : Only bone which does not articulate with any other bone Moveable base for the tongue Points of attachment for neck muscles that raise and lower the larynx during swallowing Dr. Ali Mohammed Human skeleton The Vertebral Column : Adult: 24 vertebrae Cervical - 7 Thoracic - 12 Lumbar - 5 Sacrum (5 fused) Coccyx (4 fused) Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Sternum : Manubrium Body Xiphoid process Dr. Ali Mohammed Human skeleton Ribs : True ribs 1-7 False ribs 8-12 Floa ng ribs 11,12 ti Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed Human skeleton Fontanels : Unossi ed remnants of membranes Present at birth Anterior fontanel largest Called "so spots" Ossify by 1.5-2 years Continue to ossify into adulthood;the sutures can become fused in old age. ft fi Dr. Ali Mohammed Human skeleton Dr. Ali Mohammed