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  • Skeletal & Muscular SystemMichelle SUhJane Chuyn

  • SkeletonMade of all the bones in your body.The number of bones in your skeleton depends on your age.

  • Shape and Support

  • SkeletonSpine =the central column that supports your bodys weight=a stack of small bones (Vertebrae) connected by joints

  • More...first 2 vertebrae support your skull-allows you to rotate or move your head up and down-Atlas (named after the mythical greek god that holds up the Earth)-AxisAxisAtlas

  • group of vertebrae supports the bone of your shoulder girdle and the ribsRib bones -form a cage that protects the soft tissues of heart and lungs

  • Bones- Strong and LivingBones are complex living structures that undergo growth and development.

  • Movement and ProtectionYour skeleton allows you to move.Bones protect many of the organs.Ex) protects brain, breastbone and ribs form a protective cage around your heart and lungs.

  • Function of SkeletonSupports the bodyProtects innardsProduction of blood cellsProvide place for muscle attachmentStores various minerals, salts

  • Joints of the Skeleton=place in the body where two bones come together.-allow bones to move in different ways.

  • Basic Types of JointsImmovable jointsMovable Joints

  • Immovable Joints=some joints in the body that connect bones in a way that allows little or no movement.Ex) Bones of the skull

  • Movable Joints=allows the body to make a wide range of movements.The bones in movable joints are held together called ligaments and cartilage

  • Ligaments=strong connective tissuesEx) Knee, Head, Neck, Pelvis, Thorax, Wrist

  • CartilageSecond type of connective tissue which is more flexible than bone.It covers the ends of the bones and keeps them from rubbing against each other.

  • Bone StructurePeriosteum -tough outer cover of bone -contains blood vesselsCompact bone -dense bone -made of osteocytesCompact bonePeriosteum

  • Bone Structure (continued)Spongy bone -lighter and less dense than compact bone -still strong

  • Bone Structure (continued)Marrow -red and yellow

  • Bone StrengthStrengthen

    Weaken-Vitamin D-1 drink of alcohol or less a day-enough exercise -lifting heavy weights-Smoking-too much alcohola day-more than 3 cups ofcoffee a day

  • Bone GrowthBecause bones are alive, bones also form new bone tissue as you grow.Ex)A new bone tissue forms after an accident. They form to fill the gap between the broken ends of the bone.

  • BONE DEVELOPMENTIntramembranous Ossification -> Endochondral Ossification

  • Taking Care of your bonesA combination of a balanced dietRegular exercise

  • DietA well-balanced diet includes taking 60-65% of carbohydrates, 15-20% of protein, 15-20% of fat daily

  • Exercise-prevents diabetes, arthritis, obesity, stress, and many epidemic self-related diseasesBenefits of EXERCISINGleaner, lighter, firmer, shapelier, smarter, stronger, more flexible, agile, mobile, alert, energetic, confident, optimistic, more attractiveMakes People...

  • Osteoporosis=a condition in which the bodys bones become weak and break easily. It is more common in women than in men. video will tell you the symptoms, types, lifestyle modifications of osteoporosis

  • Diagnosing Bone and Joint InjuriesCommon skeletal system injuriesFracturesDislocationsSprains

  • FractureA break in a bone that can occur when you fall in such a way that all of your weight is placed on only a few bones.

  • DislocationA second injury of the skeletal system.It occurs when the end of a bone comes out of its joint.

  • SprainIt occurs when ligaments are stretched too far and tear in places.The sprains of ankle is the most common joint injuries.

  • Identifying InjuriesX - raysMagnetic Resonance Imaging

  • X- raysIt is a form of energy that travels in waves, like the light that your eyes can see.They cannot be used directly to view injuries to soft tissues, such as muscle and internal organs.The energy in X- rays can damage body cells.

  • Magnetic Resonance ImagingA method for taking clear images of both the bones and soft tissues of the body.MRL scanner is a large machine that contains electromagnets.MRL images are sharp and clear. It can produce images of body tissue at any angle.

  • Treating InjuriesJoint ReplacementArthroscopy

  • Joint ReplacementThe joints are injured or diseased and require treatment.Arthritis is a disease of the joints that makes movement painful. - To fix Arthritis, doctor replace by surgery.

  • ArthroscopyA small incision and a slim, tube-shaped instrument that doctors insert during the surgery.It has helped to diagnose and repair many joint problems.

  • Muscular System is a fun and interesting video about the muscular system

  • Types of MuscleInvoluntary muscles Voluntary muscles

  • Involuntary MuscleSome of the muscles that are not under the conscious control.

  • Voluntary MuscleMuscles that are under the conscious control.Ex) Smiling, turning a page in a book,

  • TendonStrong connective tissue that attaches muscle to bone.

  • Striated muscleAnother name of the skeletal muscle that is not banded.

  • types of muscle tissueSkeletal muscleSmooth muscleCardiac muscle

  • Skeletal MuscleMuscles that are attached to the bones of your skeleton and provide the force that moves your bones.

  • Smooth MuscleInvoluntary muscles that work automatically to control certain movements inside your body.As the smooth muscle of the stomach contract, they produce a churning action.

  • Cardiac MuscleTissue that is found only in your heart.It is involuntary muscle and striated.

  • Muscles at WorkBecause muscle cells can only contract, not extend, skeletal muscles must work in pairs. While one muscle contracts, the other muscle in the pair relaxes to its original length.

  • Bibliography"The Skeletal System." Minnesota State University, Mankato. 09 Apr. 2009 striated, and thread-like. "Muscular and Skeletal Systems." 04 Apr. 2009 ."The Skeletal Muscle System of the Human Body." Flash Mavi. 01 Apr. 2009 ."Muscular system - Wikipedia, the free encyclopedia." Wikipedia, the free encyclopedia. 12 Apr. 2009 . "The Skeletal System." Centre for Distance Learning and Innovation. 02 Apr. 2009 . "Skeletal System." 42explore: Thematic Pathfinders for All Ages. 10 Apr. 2009 .

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