4. 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.
(a) Actin is present in thin filament
True statement
(b) H-zone of striated muscle fibre represents both thick and thin filaments.
False statement. H -zone of striated muscle fibre is the central part of the thick filament that is not overlapped by the thin filament.
(c) Human skeleton has 206 bones
True statement.
(d) There are 11 pairs of ribs in man.
False statement. There are 12 pairs of ribs in a man.
(e) Sternum is present on the ventral side of the body.
True statement