Explain pelvic and pectoral girdles for 2 marks.
PELVIC
1- The pelvic girdle is a ring-like structure, located in the lower part of the trunk. It connects the axial skeleton to the lower limbs.
2- The bony pelvis consists of the two hip bones (also known as innominate or pelvic bones), sacrum and coccyx.
3- less flexible
4- firm attachment to the axial skelton
PECTORAL
1- consists of clavicle and scapula
2- cervical holds the glenoid cavity in lateral
position allowing arm to "clear" the ribcage at
the widest point
3- very flexible better range
4- clavical is only point of attachment to axial
skeleton
5- smaller muscles and ligaments, less articular
cartilage make it a weaker joint
6- scapula held in position by muscles of the
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