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Skeletal & Muscular Systems

Skeletal & Muscular Systems. Form and Movement. Functions of the Skeleton. Gives form to the organism Stores minerals such as calcium Serves as attachment points for muscles Protects vital organs Produces blood cells Bones attach to muscles to allow movement. Regents Question.

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Skeletal & Muscular Systems

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  1. Skeletal & Muscular Systems Form and Movement

  2. Functions of the Skeleton • Gives form to the organism • Stores minerals such as calcium • Serves as attachment points for muscles • Protects vital organs • Produces blood cells • Bones attach to muscles to allow movement

  3. Regents Question One function of the endoskeleton is to 1)Transmit impulses 2)Produce lactic acid 3)Store nitrogenous wastes 4)Produce blood cells

  4. Regents Answer 4)Produce blood cells

  5. Bone and Bone Tissue • Bone tissue includes bone cells (osteocytes) and non-living mineral deposits. • Bone parts: 1. Marrow, 2. Compact bone, 3. Periosteum, 4. Spongy bone

  6. Joints • Nonmovible ( skull ) • Hinge ( elbow and knee ) • Gliding ( vertebrae ) • Ball-in-socket ( shoulder and hip )

  7. Regents Question The humerus, the bone in the upper arm, is directly connected to other bones in the arm by 1)Cartilage 2)Extensors 3)Ligaments 4)Tendons

  8. Regents Answer 3)Ligaments

  9. Bone Diseases • Osteoporosis • Acromegaly • Leukemia • Vitamin D deficency

  10. Muscular System • Contract and relax to move the body. • Stores energy • Protects internal organs

  11. Regents Question The bones of humans most directly aid body movement 1)Producing blood cells in the marrow 2)Providing an anchor site for muscles 3)Protecting internal organs 4)Absorbing excess calcium from the blood

  12. Regents Answer 2)Providing an anchor site for muscles

  13. Muscle Types Cardiac Muscle Smooth Muscle Skeletal Muscle

  14. Cardiac Muscle • Found making up the heart. • Involuntary • Striated and branched

  15. Smooth Muscle • Found in the blood vessels and digestive tract. • Involuntary • Non striated

  16. Skeletal Muscle • Voluntary • Striated • Found attached to the skeleton.

  17. Regents Question Which malfunction is most closely associated with connective tissue that is involved in human locomotion? 1)Tendonitis 2)Bronchitis 3)Diabetes 4)Meningitis

  18. Regents Answer 1)Tendonitis

  19. Muscle Attachment to Bone • Muscles are attached to bone by connective tissue called tendons. • Muscles are attached in opposing pairs. • One Muscle contracts to raise the limb, while the second will contract to lower it. • Bicep / Triceps

  20. Regents Question Which statement does not correctly describe a function of cartilage? 1)It provides flexibility in an embryo 2)It makes up the outer ear 3)It anchors muscles to bones 4)It cushions bones at a joint

  21. Regents Answer 3)It anchors muscles to bones

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