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Presentations by grade 4 on Body Systems

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  • 1. A PPT ON SKELETAL SYSTEM BY - ISHIKA & PRIYANSHI
  • 2. •We will begin our discussion of the skeletal system by talking about the tissues that will go into the construction of skeletal elements. The two primary components are cartilage and bone, with additional support coming from fibrous materials such as ligaments and tendons. •These structural materials must be able to • withstand tremendous forces that affect an organism• support the mass of the body and all of the muscles and organs that are part of the body • remain strong under the stresses of locomotion, such as when the feet strike the ground, sending the force of the impact through the body frame • be strong at the junction where two bones meet, where stress is applied and felt • protect against impact to soft tissues, such as the skull protects the brain
  • 3. • be strong at the junction where two bones meet, where stress is applied and felt • protect against impact to soft tissues, such as the skull protects the brain • be strong at the junction where two bones meet, where stress is applied and felt • protect against impact to soft tissues, such as the skull protects the brain •Altogether, bones and other skeletal materials must be resistant to such stresses, or they may break or distort. The types of forces experienced on different parts of the body will influence the structural material that is used.
  • 4.  Skull  Humerus  Ribs  Femur  Radius  Ulna  Ribcage  Spine  Pelvis  Leg Bones