where is the axial skeleton derived from?
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The axial skeleton is derived from somites. The formation of the axial skeleton is more complex, however, than the simple subdivision of the paraxial mesoderm into somites and the medial displacement of sclerotomal cells within the somites to form primordia of the vertebrae.
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The adult human skeleton usually consists of 206 named bones. These bones can be grouped in two divisions: axial skeleton and appendicular skeleton. The 80 bones of the axial skeleton form the vertical axis of the body. They include the bones of the head, vertebral column, ribs and breastbone or sternum.
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The axial skeleton forms the central axis of the human body and includes the bones of the skull, the ossicles of the middle ear, the hyoid bone of the throat, the vertebral column, and the thoracic cage (ribcage).
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The two broad divisions of the skeleton are the axial skeleton and the appendicular skeleton.
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The axial skeleton forms the central axis of the human body and consists of the skull, vertebral column, and thoracic cage.
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Answer and Explanation: The mandible is part of the axial skeleton. The 80 human bones in the axial skeleton include the sacral, coccygeal, part of the ribs, sternum and the...
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The appendicular skeleton includes all the bones that form the upper and lower limbs, and the shoulder and pelvic girdles. The axial skeleton includes all the bones along the body's long axis.
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External abdominal oblique muscle originates from the external surfaces of ribs 5-12. ... At the midclavicular line medially and spinoumbilical line inferiorly, external abdominal oblique continues as an aponeurosis via which it inserts to the linea alba, pubic tubercle and anterior half of iliac crest.
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The skeleton is traditionally divided into two major parts: the axial skeleton, which includes the skull, spine, and rib cage; and the appendicular skeleton, which includes the appendages and the girdles that attach them to the axial skeleton.
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['The axial skeleton forms the axis of the body. It includes the skull, vertebral column (spine), and rib cage. ... ', 'The appendicular skeleton forms the appendages and their attachments to the axial skeleton.']
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It consists of the skull, vertebral column (including the sacrum and coccyx), and the thoracic cage, formed by the ribs and sternum. The appendicular skeleton is made up of all bones of the upper and lower limbs and the girdles which attach them to the axial skeleton.
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Iliocostalis lumborum muscle originates from three points; lateral crest of sacrum, medial end of iliac crest and thoracolumbar fascia. It attaches to the angle of ribs 5-12, transverse processes of vertebrae L1-L4 and adjacent thoracolumbar fascia.
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Axial and Appendicular Skeleton. The axial skeleton supports the head, neck, back, and chest and thus forms the vertical axis of the body. It consists of the skull, vertebral column (including the sacrum and coccyx), and the thoracic cage, formed by the ribs and sternum.
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The axial skeleton includes the skull and all the cranial bones, the spine, the ribs and the hyoid bone. ... The pelvis, femur, fibula, tibia and all of the foot bones as well as the scapula, clavicle, humerus, radius, ulna and all of the hand bones are classified as appendicular.
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['Human Axial Skeleton. The axial skeleton forms the central axis of the human body and includes the bones of the skull, the ossicles of the middle ear, the hyoid bone of the throat, the vertebral column, and the thoracic cage (ribcage). ... ', 'The Skull. ... ', 'The Vertebral Column. ... ', 'The Thoracic Cage.']
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The bones of the appendicular skeleton make up the rest of the skeleton, and are so called because they are appendages of the axial skeleton. The appendicular skeleton includes the bones of the shoulder girdle, the upper limbs, the pelvic girdle, and the lower limbs.
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The human appendicular skeleton is composed of the bones of the upper limbs (which function to grasp and manipulate objects) and the lower limbs (which permit locomotion). It also includes the pectoral (or shoulder) girdle and the pelvic girdle, which attach the upper and lower limbs to the body, respectively.