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Bones and the skeletal system maitreyi imp school wrk
 

Bones and the skeletal system maitreyi imp school wrk

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it is about the skeletal systems for children

it is about the skeletal systems for children

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Bones and the skeletal system maitreyi imp school wrk Bones and the skeletal system maitreyi imp school wrk Presentation Transcript

  • Bones and the Skeletal system
  • ! CAUTION !
    IF YOU FEEL LIKE PUKING AT THE SIGHT OF SCULLS OR SKELETONS THEN PLEASE GET OUT OF THE ROOM RATHER THAN DIRTY THE CLASSROOM
  • Introduction
    Every single person has a skeleton made up of bones. Bones are part of the skeletal system. Bones meet up at joints which allow movement. Bones are also important because they also store calcium, which is vital to the working of nerves and muscles. The skeleton is like a frame and it gives shape to our body. A new born baby has approximately 270 bones but when it grows up the bones join together and then it is left with 206 bones. Bones make up 14 of our body weight.
  • Cartilaginous- (pronunciation- car.ti.lag.i.nous)
    meaning- of or resembling cartilage.
    Cartilage- a strong, elastic tissue which is very flexible
    Phosphates-phosphateis a salt of phosphoric acid
    Cartilage- a firm, elastic, flexible type of connective tissue of a translucent whitish or yellowish colour
    Intervertebral-situated between the vertebrae
    Vertebrae- a long column of hollow bones
    New Words
    (meanings not in alphabetical order)
  • SKELETON OF HUMAN GROWN UP
    SKELETON OF A HUMAN BABY
  • Bones are made of calcium and phosphates.
    What are bones made of ?
  • Structure of a Bone
    • Compact Bone- Compact bones are also called cortical bones and they form a shell around the spongy bone.
    • Spongy Bone- Also called the cancellous bone the spongy bones is one of two types of osseous tissuethat form bones.
    • Bone Marrow- Bone marrow is the flexible tissue found in the interior of bones. The marrow helps in producing new blood cells and stores fat.
  • Bones are light yet they are 5 times stronger than steel.
    The smallest bone is one of the three earbones, called the stapes.
    The largest bone is the thigh bone.(Femur)
    Facts about bones
  • THE HUMAN SKELETON
    (up to down)
  • The skull is set of 22 bones(Excluding the 3 bones in each middle ear)(all the largest bones are shown in the next slide) They fall into two main groups. One group (including the frontal, parietal, and temporal bones) surrounds the brain and is fused together to form the cranium. The remainder of the bones form the face. The skull protects the brain. Only the lower jaw is movable not the upper jaw. There is no nose bone, the nose is made of cartilage.
    THE SKULL
  • Parietal Bone
  • The neck bone is one of the 7 vertebrae in the human spine located in the neck region. The neck bone is used to turn our head around.
    The Neck bone
  • Spine/Backbone
  • The spine /backbone also called the vertebral column supports the body and the head. It gives our body a proper posture.It also protects the delicate tissues of the spinal cord. It is made up of 33 bones called vertebrae, separated by intervertebral discs, which act as shock absorbers. The bones of the spine are kept in place and supported by attached ligaments and muscles.
  • Rib cage
    (this diagram shows many things that we don’t need to know about right now)
  • The human rib cage (also called the thoracic cage)is a bony and cartilaginous structure. A typical human rib cage consists of 24 ribs(12 ribs on each side). Ribs are meant to protect the lungs and the heart.
  • Fore limbs (Arm Bones)
  • There are 27 bones in our arms and wrists There is one single upper arm bone called humerus and 2 lower arm bones-radius and ulna.
  • Hindlimbs ( leg bones)
  • The longest bone in our body is the thigh bone (femur). The lower leg has 2 bones called tibia and fibula. Approx. 26 bones make our ankle and foot.
  • Joints are where two bones meet. Joints help us to move our body.
    Joints