Write true or false. If false change the statement so that it is true.
(a) Actin is present in thin filament
(b) H-zone of striated muscle fibre represents both thick and thin filaments.
(c) Human skeleton has 206 bones.
(d) There are 11 pairs of ribs in man.
(e) Sternum is present on the ventral side of the body.
Fill in the blank spaces:
(a) All mammals (except a few) have __________ cervical vertebra.
(b) The number of phalanges in each limb of human is __________
(c) Thin filament of myofibril contains 2 ‘F’ actins and two other proteins namely____ and _____.
(d) In a muscle fibre \( (Ca^{2+} )\) is stored in __________
(e) __________ and __________ pairs of ribs are called floating ribs.
(f) The human cranium is made of __________ bones
Name the type of joint between the following:-
(a) atlas/axis
(b) carpal/metacarpal of thumb
(c) Between phalanges
(d) femur/acetabulum
(e) Between cranial bones
(f) Between pubic bones in the pelvic girdle
How do you distinguish between a skeletal muscle and a cardiac muscle?
What are the different types of movements exhibited by the cells of the human body?
Match Column I with Column II:
| Column I | Column II |
| (a) Smooth Muscle | (i) Myoglobin |
| (b) Tropomyosin | (ii) Thin Filament |
| (c) Red muscle | (iii) Sutures |
| (d) Skull | (iv) Involuntary |