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Biology · Textbook solutions

Locomotion and Movement

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. · 26 questions

Exercises

26 q
  1. Ex 17 Q1
    Draw the diagram of a sarcomere of skeletal muscle showing different regions.
  2. Ex 17 Q2
    Define sliding filament theory of muscle contraction.
  3. Ex 17 Q3
    Describe the important steps in muscle contraction.
  4. Write true or false. If false change the statement so that it is true.
    Ex 17 Q4 (a)
    Actin is present in thin filament
  5. Ex 17 Q4 (b)
    H-zone of striated muscle fibre represents both thick and thin filaments.
  6. Ex 17 Q4 (c)
    Human skeleton has 206 bones.
  7. Ex 17 Q4 (d)
    There are 11 pairs of ribs in man.
  8. Ex 17 Q4 (e)
    Sternum is present on the ventral side of the body.
  9. Write the difference between :
    Ex 17 Q5 (a)
    Actin and Myosin
  10. Ex 17 Q5 (b)
    Red and White muscles
  11. Ex 17 Q5 (c)
    Pectoral and Pelvic girdle
  12. Ex 17 Q6
    Match Column I with Column II :
    Column IColumn II
    (a) Smooth muscle(i) Myoglobin
    (b) Tropomyosin(ii) Thin filament
    (c) Red muscle(iii) Sutures
    (d) Skull(iv) Involuntary
  13. Ex 17 Q7
    What are the different types of movements exhibited by the cells of human body?
  14. Ex 17 Q8
    How do you distinguish between a skeletal muscle and a cardiac muscle?
  15. Name the type of joint between the following:-
    Ex 17 Q9 (a)
    atlas/axis
  16. Ex 17 Q9 (b)
    carpal/metacarpal of thumb
  17. Ex 17 Q9 (c)
    between phalanges
  18. Ex 17 Q9 (d)
    femur/acetabulum
  19. Ex 17 Q9 (e)
    between cranial bones
  20. Ex 17 Q9 (f)
    between pubic bones in the pelvic girdle
  21. Fill in the blank spaces:
    Ex 17 Q10 (a)
    All mammals (except a few) have _______ cervical vertebra.
  22. Ex 17 Q10 (b)
    The number of phalanges in each limb of human is _______
  23. Ex 17 Q10 (c)
    Thin filament of myofibril contains 2 'F' actins and two other proteins namely _______ and _______.
  24. Ex 17 Q10 (d)
    In a muscle fibre Ca++\text{Ca}^{++} is stored in _______
  25. Ex 17 Q10 (e)
    _______ and _______ pairs of ribs are called floating ribs.
  26. Ex 17 Q10 (f)
    The human cranium is made of _______ bones.